primitive streak
pl: primitive streaks
Related Words
embryoblastocystgastrulationepiblasthypoblastectodermmesodermendodermaxissymmetrybilateralmorphogenesisnotochordgerm layerinvaginationingressionepitheliummesenchymeblastoporedevelopmentembryologyorganogenesissignalingmorphogentranscription factorinductionpatterninganteriorposteriordorsalventralmidlinesomiteblastulagastrulaproliferationdifferentiationapoptosiscytoskeletonadhesioncadherinsymmetry breakingzygotemorulatrophoblastinner cell massimplantationgestationteratologylineagespecificationdetermination