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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
1st arch mandibular ectoderm 
1st arch mandibular endoderm +  
1st arch maxillary ectoderm +  
1st arch maxillary endoderm 
anterior axial hypoblast +  
anterior lateral mesoderm 
anterior lateral plate mesoderm +  
anterior neural keel +  
anterior neural rod +  
anterior presumptive neural plate 
axial hypoblast +  
bulbus arteriosus outer layer 
carapacial ridge ectoderm 
carapacial ridge mesenchyme 
cardiac neural crest +  
cardiogenic splanchnic mesoderm +  
cardiopharyngeal field +  
cerebellar plate +  
chordo neural hinge 
ciliated columnar epithelium +  
cranial neural crest +  
dorsal axial hypoblast 
dorsal lateral plate region 
dorsal part of pharyngeal pouch 1 
dorsal part of pharyngeal pouch 2 +  
dorsal part of pharyngeal pouch 3 +  
dorsal part of pharyngeal pouch 4 
dorsal part of pharyngeal pouch 5 
ear vesicle +  
early pharyngeal endoderm +  
egg cylinder 
embryonic cloacal epithelium +  
embryonic lymph sac +  
entire pharyngeal arch associated mesenchyme +  
entire pharyngeal arch endoderm +  
enveloping layer of ectoderm +  
epididymis epithelium 
epithelium of footplate +  
epithelium of gall bladder 
epithelium of handplate +  
epithelium of otic placode +  
epithelium of stomach +  
external ectoderm +  
external yolk syncytial layer 
eye primordium +  
falciform fat 
floor plate +  
forebrain neural keel +  
forebrain neural rod +  
forebrain neural tube 
frontonasal process epithelium +  
future central tendon +  
future falx cerebri +  
future hindbrain meninx +  
germ layer / neural crest +  
germinal neuroepithelium +  
glandular columnar epithelium +  
head fold of embryonic disc 
head mesenchyme +  
head somite +  
heart tube +  
hepatic diverticulum +  
hindbrain neural keel +  
hindbrain neural rod +  
hindbrain neural tube 
infundibular recess of 3rd ventricle +  
insect abdominal histoblast anlage +  
insect cephalic furrow 
insect mesoderm anlage +  
insect mesothoracic tergum primordium +  
insect ventral furrow 
internal yolk syncytial layer 
intestinal epithelium +  
kidney field +  
lamina terminalis of neural tube +  
lateral floor plate 
lateral lingual swelling epithelium 
lateral plate mesoderm +  
lateral wall neural rod 
liver primordium +  
maxillary process ectoderm +  
maxillary process mesenchyme +  
medial floor plate 
median lingual swelling epithelium 
mesenchyme from somatopleure +  
mesenchyme from splanchnopleure +  
mesenchyme of sublingual gland primordium 
mesenchyme of submandibular gland primordium 
mesoderm blood island 
metanephric mesenchyme +  
midbrain neural keel +  
midbrain neural rod 
midbrain neural tube +  
nasolacrimal groove +  
neural fold +  
neural plate +  
neural tube +  
neural tube basal plate +  
neural tube mantle layer +  
neural tube ventricular layer +  
noninvoluting endocytic marginal cell cluster 
notochordal plate +  
optic eminence mesenchyme 
organizer inducing center 
otic vesicle protrusion +  
paired limb/fin field +  
pancreatic epithelial bud +  
paraxial mesoderm +  
pectoral appendage bud ectoderm +  
pelvic appendage bud ectoderm +  
pericardio-peritoneal canal mesothelium +  
pharyngeal arch mesenchyme from head mesenchyme +  
pharyngeal arch mesenchyme from neural crest +  
pharyngeal ectoderm +  
pharyngeal pouch +  
pleuroperitoneal canal 
pleuroperitoneal membrane 
posterior neural keel +  
posterior neural rod +  
posterior presumptive neural plate 
pre-cartilage condensation +  
pre-chordal neural plate +  
presumptive axochord +  
primary heart field +  
primitive olfactory epithelium +  
primitive streak +  
The primitive streak is a structure that forms during the early stages of avian, reptilian and mammalian embryonic development[WP]. the midline ridge of the embryonic epiblast that later develops into mesoderm and endoderm[MP].
prostate epithelium +  
prostate field +  
pseudostratified columnar epithelium +  
right atrium endocardium +  
roof plate +  
roof plate of diencephalon 
roof plate of medulla oblongata 
roof plate of metencephalon 
roof plate of midbrain 
roof plate of telencephalon 
roof plate spinal cord region 
sacral neural crest 
secondary heart field +  
sex cord +  
spinal cord neural keel 
spinal cord neural rod 
spinal cord neural tube 
spleen primordium +  
stomodeal ectoderm 
submandibular gland primordium epithelium 
tail bud paraxial mesoderm 
tail fold of embryonic disc 
trunk mesenchyme +  
trunk neural crest +  
vagal neural crest +  
ventral part of pharyngeal pouch 1 
ventral part of pharyngeal pouch 2 
ventral part of pharyngeal pouch 3 
ventral part of pharyngeal pouch 4 
ventral part of pharyngeal pouch 5 

Synonyms
Exact Synonyms: primitive streak - blastopore - germ ring
Xrefs: EHDAA2:0001525 ;   EHDAA:185 ;   EMAPA:16072 ;   FMA:293110 ;   MESH:D054240 ;   NCI:C28402 ;   SCTID:361438007 ;   UMLS:C0033153 ;   VHOG:0001202 ;   Wikipedia:Primitive_streak
External Ontologys: dubious_for_taxon NCBITaxon:32443
Definition Sources: MP:0002231, Wikipedia:Primitive_streak

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