the result showed that ( 1 ) there were concomitant changes in the morphology of the neural crest epithelium during the formation of neural crest cells , in the 4- to 7-somite-stage embryos , ( 2 ) the neural crest cells were initially confined to the lateral subectodermal region of the cranial mesenchyme and there was minimal mixing with the paraxial mesoderm underneath the neural plate , ( 3 ) labelled cells from the presumptive crest region colonized the lateral cranio-facial mesenchyme , the developing trigeminal ganglion and the pharyngeal arch , ( 4 ) the formation of neural crest cells was facilitated by the focal disruption of the basal lamina and the cell-cell interaction specific to the neural crest site and ( 5 ) the trigeminal ganglion was colonized not only by neural crest cells but also by cells from the ectodermal placode .
C0815004
neural crest cells
C0013574
ectodermal