| OCR Text |
Show 104 differentiates to mark the pharynx. tomodaeal wall is thickened into rugae protrude these structures the into lumeno form the At The initially developing associated with relatively lightly was traced not somewhat caudal The unclearo trulation a as two The extend also After ectodermal edges of the the of mesenteron now the as splanchnic mesoderm condenses Differentiation of the histology studied, was nor sheets not was rupture the of stomodaeum. The two The in the of cells the and upward Scattered external surface. form the typical of lineo complete to closed ends No the epitheliumo several stretch dorsal the the also lateral midventral closure, extend on in any of notedo dorsal mesenteron found the of been during gas mesentodermal cuboidal low arises is layer. midgut tubeo appear have inner mesenteron rudiment formation to presumed the fuse and mesodermal structure origin of this tissue of were to ventrally stain this origin of which end the ribbons proctodaeal invagi Hence apparently posterior around the is the plate, anterior mesenteron rudiments strips of lateral nuclei which The It latter lateral intima two as cytoplasmo specialized region and merge anteriorly tissue dense have satisfactorilyo from the derived and appears nondescript sheete a as appears of four stomodaeal valve. from cells sheets the end, rim and chitinized mesenteron These distal distinct a The nation. the late the larval embryos stomodaeum |
