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Organisational structure in early vertebrate embryogenesis
The primitive node (or primitive knot) is the embryonic organizer, a specialized signaling centre for gastrulation in most amniotes. In mammals the primitive
Primitive_node
Structure in early amniote embryogenesis
the cranial (anterior) end of the disc, the primitive streak expands into an area known as the primitive node which is the organizer for gastrulation. In
Primitive_streak
Transcription factor
in cells comprising the primitive node (node) of the developing embryo and functions to define the shape of the primitive node, help develop the lateral
Notochord_homeobox
Topics referred to by the same term
responsible for initiating and coordinating the heartbeat Primitive knot or primitive node, the organizer tissue for gastrulation in vertebrates The place
Node
Organelle found on eukaryotic cells
central pair of microtubules are found in the cells of the embryonic primitive node; termed nodal cells, these nodal cilia are responsible for the left-right
Cilium
Structure in an embryo which will become the nervous system
serves as the basis for the nervous system. Cranial to the primitive node of the embryonic primitive streak, ectodermal tissue thickens and flattens to become
Neural_plate
Flexible rod-shaped structure in all chordates
The progenitor notochord is derived from cells migrating from the primitive node and pit. The notochord forms during gastrulation and soon after induces
Notochord
Mathematical tree of integer right triangles
tree of primitive Pythagorean triples is a mathematical tree in which each node represents a primitive Pythagorean triple and each primitive Pythagorean
Tree of primitive Pythagorean triples
Tree_of_primitive_Pythagorean_triples
Development and formation of the human embryo
by way of the primitive streak which establishes bilateral symmetry. A primitive node (or primitive knot) forms in front of the primitive streak which
Human_embryonic_development
3D computer graphics software
an attribute spreadsheet editor. The Geometry Nodes utility also has the capability of creating primitive meshes. In Blender 3.0, support for creating
Blender_(software)
Medical condition
fertilized eggs occurs early in development. Partial splitting of the primitive node and streak may result in the formation of conjoined twins. These twins
Conjoined_twins
Anatomical structure in a developing embryo
fish, and the primitive streak in birds and mammals. Each is controlled by the dorsal lip and primitive node (also known as Hensen's node), respectively
Archenteron
Cells that give rise to the embryo in amniote development
of the epiblast to the center midline. The primitive node is situated at the anterior end of the primitive streak and serves as the organizer for gastrulation
Epiblast
Process by which animal embryos form and develop
knob-like thickening termed the primitive node or knot (known as Hensen's knot in birds). A shallow groove, the primitive groove, appears on the surface
Animal_embryonic_development
Embryologic stage in which germ layers form
in the development between mice and humans. Fate mapping Neurulation Primitive node Vegetal rotation Urry, Lisa (2016). Campbell Biology (11th ed.). Pearson
Gastrulation
Integer side lengths of a right triangle
In other words, every primitive triple will be a "parent" to three additional primitive triples. Starting from the initial node with a = 3, b = 4, and
Pythagorean_triple
Mammalian protein found in Homo sapiens
embryogenesis, playing a key role in signal transfer from the primitive node, in the anterior primitive streak, to lateral plate mesoderm (LPM). Nodal signaling
Nodal_homolog
Medical condition
and so rotate clockwise rather than beat; in the primitive node at the anterior end of the primitive streak in the embryo, these are angled posteriorly
Primary_ciliary_dyskinesia
Protein-coding gene in the species Homo sapiens
respiratory tracts, spermatozoa flagellae, and nodal cilia (cilia of the primitive node). DNAI1 specifically encodes for an intermediate chain of the outer
DNAI1
Collaborative map database
three geometric primitives: A node is a point with a geographic coordinate expressed in the WGS 84 coordinate system. A standalone node represents a point
OpenStreetMap
Protein found in humans
endoderm and blocks the action of BMP, Nodal and Wnt, secreted by the primitive node, which allows for the formation of a head region. This is accomplished
Cerberus_(protein)
Embryonic inner cell mass tissue that forms the yolk sac and, later, chorion
migration determines the cell movements that accompany the formation of the primitive streak, and helps to orient the embryo, and create bilateral symmetry
Hypoblast
Limited form of tree data structure
In computer science, a binary tree is a tree data structure in which each node has at most two children, referred to as the left child and the right child
Binary_tree
DNA sequence that binds activators to increase the likelihood of gene transcription
expression in the portion of the primitive streak that will differentiate into the node (also referred to as the primitive node). The PEE turns on Nodal expression
Enhancer_(genetics)
Members of the TGF-beta superfamily of growth factors
responsible for gastrulation, left-right patterning and induction of the primitive node. As NODAL protein diffuse through an embryo, it triggers Nodal Signaling
Lefty_(protein)
Protein-coding gene in the species Homo sapiens
stroke for cilia.3 During early development, the cilia found on the primitive node will beat in a directional pattern, sending signaling molecules to the
DNAH5
Protein-coding gene in the species Homo sapiens
a transcription factor that controls head and limb development. The primitive node will secrete the signaling molecules “Lefty” and “Cerebus” that then
LHX1
Tree in which each node has at most three children
each node has at most three child nodes, usually distinguished as "left", “mid” and "right". Nodes with children are parent nodes, and child nodes may
Ternary_tree
Group of genes
anterior/posterior axis formation and facilitates the regression of the primitive node. Hox genes area also critical for the proper orientation of the head
Cdx
Clade containing most theropod dinosaurs
allosaurids that split from the Coelurosauria at the Neotetanurae/Avetheropoda node. Members of Megalosauroidea are believed to represent basal tetanurans, but
Tetanurae
Portion of a nerve fiber
portion of a nerve fiber between two nodes of Ranvier. The neurilemma or primitive sheath is not interrupted at the nodes, but passes over them as a continuous
Internodal_segment
String-searching algorithm
then there will be nodes for (bca), (bc), (b), and (). If a node is in the dictionary then it is a blue node. Otherwise it is a grey node. There is a black
Aho–Corasick_algorithm
Type of data structure
every "leaf" node is labelled with the cryptographic hash of a data block, and every node that is not a leaf (called a branch, inner node, or inode) is
Merkle_tree
differentiation of various avian body parts. Koller's sickle induces primitive streak and Hensen's node, which are major components of avian gastrulation. Avian gastrulation
Koller's_sickle
Abnormally fast heart rhythm
These abnormal rhythms start from either the atria or atrioventricular node. They are generally due to one of two mechanisms: re-entry or increased automaticity
Supraventricular_tachycardia
Prenatal development of the heart
Pacemaker cells develop in the primitive atrium and the sinus venosus to form the sinoatrial node and the atrioventricular node respectively. Conductive cells
Heart_development
Creating a complex 3D surface or object by combining primitive objects
objects, potentially generating visually complex objects by combining a few primitive ones. In 3D computer graphics and CAD, CSG is often used in procedural
Constructive_solid_geometry
Root of a phylogenetic tree
The term may be more strictly applied only to nodes adjacent to the root, or more loosely applied to nodes regarded as being close to the root. Extant taxa
Basal_(phylogenetics)
Redirection of ejaculated semen into the urinary bladder
retrograde ejaculation may occur. It can also be induced deliberately as a primitive form of male birth control (known as coitus saxonicus) or as part of certain
Retrograde_ejaculation
System that regulates the formation of blocks on a blockchain
proof-of-work function by individual miners and verified by the decentralized nodes in the P2P Bitcoin network. The difficulty is periodically adjusted to keep
Proof_of_work
Concurrency-protecting pointer owned by one thread at most at a time
approach to solving the problems posed by dynamic memory management of the nodes in a lock-free data structure. These problems generally arise only in environments
Hazard_pointer
Graphics structure
not empty): 5 Let node B be the extracted top node in V 6 if (Ray intersects B's bound): 7 if (node is a leaf): 8 Check all primitive objects in the bounded
Bounding_volume_hierarchy
Protein-coding gene in the species Homo sapiens
and ectoderm) are established. At the beginnings of gastrulation, the primitive node serves as the organizer and has motile cilia on its surface. These cilia
DNAH11
Protein-coding gene in the species Homo sapiens
thoracic aorta lymph node Top expressed in genital tubercle tail of embryo yolk sac retinal pigment epithelium zygote primitive streak embryo Epithelium
ZRSR2
Identification of different areas of development in an early embryo
axis come from the primitive node. The other important site is the anterior visceral endoderm (AVE). The AVE lies anterior to the node's most anterior position
Regional_differentiation
Cavity in the hearts of chordates
terminalis. In most mammals, the sinus venosus also forms the sinoatrial node and the coronary sinus.[verification needed] In the embryo, the thin walls
Sinus_venosus
Graph with multiple edges between two vertices
nodes. Edges with own identity: Edges are primitive entities just like nodes. When multiple edges connect two nodes, these are different edges. A multigraph
Multigraph
Type of gradient noise in computer graphics
2n grid nodes. Therefore, at points close to the grid nodes, the output will approximate the dot product of the gradient vector of the node and the offset
Perlin_noise
Type of program in computer graphics
through the rendering pipeline. Shaders act on data such as vertices and primitives, generate or morph geometries and fragments, and calculate the colors
Shader
Protein-coding gene in the humans
tube mammary gland lactiferous gland lymph node Top expressed in abdominal wall mandibular prominence primitive streak medial nasal prominence female urethra
ALX3
Tree data structure for metric spaces
element , the lookup primitive traverses the BK-tree to find the closest element of . The key idea is to restrict the exploration of to nodes that can only improve
BK-tree
Non-blocking data structure in computer science
an adjacent node: node B and node C respectively the delete of node C is undone by the delete of node B Valois make use of auxiliary nodes which contain
Non-blocking_linked_list
Method for recursively subdividing a space into two subsets using hyperplanes
each node of the BSP tree contains only polygons in a single plane. In collision detection or ray tracing, a scene may be divided up into primitives on
Binary_space_partitioning
Methodological basis for 3D CAD/CAM solid modeling and image rendering
information is stored at the leaves of the tree where primitive solids reside. The top and intermediate nodes in the tree only specify combine operators. Characterizing
Ray_casting
Abstract computational machine model
the start node, then edge 0 from the resulting node, then edge 0, then edge 1, then edge 1. Thus a word identifies a node, the final node of the path
Pointer_machine
level nodes) and leaf nodes that represent primitive actions such as variable assignments or the sending of commands to the external system. Node Types:
PLEXIL
Natural number
unlabeled) rooted trimmed trees with 28 nodes 1,096,671,326 : number of uniform rooted trees with 26 nodes 1,104,891,746 : number of partially ordered
1,000,000,000
Capital and largest city of Spain
it is the political, economic and cultural centre of the country. The primitive core of Madrid, a walled military outpost, dates back to the late 9th
Madrid
Protein-coding gene in humans
MID1 is expressed in the primitive node where MID1 plays a pivotal role in establishing the molecular asymmetry at the node, which is crucial for the
MID1
Concurrent data structure
is a scalable lock-free stack utilizing the fine-grained concurrency primitive compare-and-swap. It is believed that R. Kent Treiber was the first to
Treiber_stack
Sorting algorithm using the heap data structure
heap (a data structure where each node is greater than its children) and then repeatedly removes the largest node from that heap, placing it at the end
Heapsort
Medical condition
(either biopsy or rarely a full omentectomy), and both pelvic and aortic lymph node dissection. Laproscopy is often suggested as an alternative to surgically
Immature_teratoma
Natural number
There are exactly: 888 trees with four unlabeled and three labeled nodes, 888 seven-node undirected graphs without isolated vertices, and 888 non-alternating
888_(number)
Area of the heart
the embryo with the primitive atrium. The superior border of the terminal sulcus designates the transverse plane in which the SA node resides. The inferior
Terminal_sulcus_(heart)
Programming language
boundary nodes of the circuit to which they are connected. There are two kinds of I/O operations: put-requests dispatch data items to a node, and get-requests
Reo_Coordination_Language
Protein-coding gene in the species Homo sapiens
enteric neural crest cell morula ventricular zone embryo vas deferens primitive streak somite More reference expression data BioGPS n/a Gene ontology
Protein_SET
Library for Rust programming language
Deno uses Tokio under the hood, in comparison to the JavaScript runtime Node.js, which uses the libuv library. Tokio allows for the execution of asynchronous
Tokio_(software)
of ST6GAL1 are found in mouse high endothelial cells of mesenteric lymph node and Peyer's patches, and it could be involved in the B cell homing to Peyer's
ST6GAL1
from, derived from Greek ἀπό (apó) apoptosis, apocrine archi- first, primitive Greek ἀρχι- (arkhi-) archinephros arsen(o)- of or pertaining to a male;
List of medical roots and affixes
List_of_medical_roots_and_affixes
Programming language
communication between processes (see Location transparency) on different Erlang nodes (on different hosts). Joe Armstrong, co-inventor of Erlang, summarized the
Erlang_(programming_language)
InterPro Family
anterior primitive streak. In the chick embryo it is expressed in the anterior cells of Koller's sickle, which form the anterior cells of the primitive streak
Chordin
Free and open-source object relational database management system
(write-ahead logs (WAL)) to replica nodes asynchronously, with the ability to run read-only queries against these replicated nodes. This allows splitting read
PostgreSQL
Version of the XML Path language
attributes, text nodes, comments, processing instructions, namespace nodes, and document nodes. (The document node replaces the root node of XPath 1.0, because
XPath_2.0
Open-source container software
major public cloud vendors. The software consists of a control plane and nodes on which the actual applications run. It includes tools like kubeadm and
Kubernetes
Extinct order of tetrapods
a diverse ancient order of small to giant tetrapods—often considered primitive amphibians—that flourished worldwide during the Carboniferous, Permian
Temnospondyli
Approach to software development
out the program logic in a human language with included (separated by a primitive markup) code snippets and macros. Macros in a literate source file are
Literate_programming
Sixth and last period of the Paleozoic Era
Permian (Cisuralian) was marked by a major faunal shift as most lineages of primitive "pelycosaur" synapsids became extinct, being replaced by more advanced
Permian
Visual symbol expressing the Christian Trinity
links connecting the center node with the outer nodes are labelled is (Latin EST). The three links connecting the outer nodes to each other are labelled
Shield_of_the_Trinity
Clade of dinosaurs
the most primitive known euornithians (the Yanornithiformes) had a mosaic of advanced and primitive features. These species retained primitive features
Euornithes
Kingdom of organisms
multicellular freshwater eukaryotes existed over 1000 million years ago. Primitive land plants began to diversify in the late Silurian, around 420 million
Plant
Organ found in humans and other animals
axial twist in the early embryo. The sinoatrial node is found in all amniotes but not in more primitive vertebrates. In these animals, the muscles of the
Heart
Human-readable data serialization language
within a stream. Repeated nodes are initially denoted by an ampersand (&) and thereafter referenced with an asterisk (*). Nodes may be labeled with a type
YAML
Fault in a computer system that presents different symptoms to different observers
is a node crash, detected by other nodes, Byzantine failures imply no restrictions on what errors can be created, which means that a failed node can generate
Byzantine_fault
Natural number
primes (179 + 181 + 191). There are 551 mathematical trees on 12 unlabeled nodes. 552 = 23 × 3 × 23. It is a pronic number, an untouchable number, and a
500_(number)
List of concepts in artificial intelligence
artificial neural networks, the activation function of a node defines the output of that node given an input or set of inputs. adaptive algorithm An algorithm
Glossary of artificial intelligence
Glossary_of_artificial_intelligence
Set of computers configured in a distributed computing system
viewed as a single system. Unlike grid computers, computer clusters have each node set to perform the same task, controlled and scheduled by software. The newest
Computer_cluster
Graph structure studied in group theory
with a node for each group element. For each primitive cycle, we then choose some element a that generates that cycle, and we connect the node for e to
Cycle_graph_(algebra)
Subsystem of the Linux kernel
nodes". Kernel.org. "drm/i915: Support render nodes". Kernel.org. "drm/radeon: Support render nodes". Kernel.org. "drm/nouveau: Support render nodes"
Direct_Rendering_Manager
General-purpose programming language
Expression trees represent code as an abstract syntax tree, where each node is an expression that can be inspected or executed. This enables dynamic
C Sharp (programming language)
C_Sharp_(programming_language)
Software that translates code from one programming language to another
the basis of digital modern computing development during World War II. Primitive binary languages evolved because digital devices only understand ones
Compiler
Functional programming construct
pattern describes a part of a tree by starting with a node and specifying some branches and nodes and leaving some unspecified with a variable or wildcard
Pattern_matching
Family of insects
easily identified by their geniculate (elbowed) antennae and the distinctive node-like structure that forms their slender waists. Ants form colonies that range
Ant
3D computer graphics program
node-based workflow. With MCG the user can create a new plug-in for 3ds Max in minutes by simply wiring together parameter nodes, computation nodes,
Autodesk_3ds_Max
Message-passing system for parallel computers
Intra-Node MPI Communication: "MPICH2 (since release 1.1.1) uses KNEM in the DMA LMT to improve large message performance within a single node. Open MPI
Message_Passing_Interface
Class of artificial neural networks
their nodes, GNN architectures are commonly designed to be permutation equivariant: reordering the nodes in the input reorders the corresponding node representations
Graph_neural_network
roll at incredible speeds. They organize into small, technologically primitive tribes that form war parties to fight the other tribes for territory.
List of Star Wars species (A–E)
List_of_Star_Wars_species_(A–E)
Hypothesis in computational complexity theory
cryptography. A major goal in cryptography is to create cryptographic primitives with provable security. In some cases, cryptographic protocols are found
Computational hardness assumption
Computational_hardness_assumption
In computing, restricting data to be accessible by one thread at a time
removal of a node that sits between two other nodes is performed by changing the next pointer of the previous node to point to the next node (in other words
Mutual_exclusion
Particular way of storing and organizing data in a computer
collection of data elements of any type, called nodes, where each node has itself a value, and points to the next node in the linked list. The principal advantage
Data_structure
NASA asteroid sample return mission (2016-2023)
sub-type of the carbonaceous C-type asteroids. Such asteroids are considered primitive, having undergone little geological change from their time of formation
OSIRIS-REx
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