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source DB	source ID	text	size	updated at	# proj.	# Ann.
GrayAnatomy	7	In front of the primitive streak two longitudinal ridges, caused by a folding up of the ectoderm, ma	2.79 KB	2019-12-21	3	53
GrayAnatomy	13	The mandibular arch lies between the first branchial groove and the stomodeum; from it are developed	12.7 KB	2019-12-21	3	252
GrayAnatomy	11	The yolk-sac (Figs. 22 and 23) is situated on the ventral aspect of the embryo; it is lined by entod	1.63 KB	2019-12-21	3	27
GrayAnatomy	5	Fertilization consists in the union of the spermatozoön with the mature ovum (Fig. 8). Nothing is kn	2.71 KB	2019-12-21	3	36
GrayAnatomy	8	The notochord (Fig. 19) consists of a rod of cells situated on the ventral aspect of the neural tube	1.23 KB	2019-12-21	3	26
GrayAnatomy	3	The ova are developed from the primitive germ cells which are imbedded in the substance of the ovari	7.71 KB	2019-12-21	3	107
GrayAnatomy	4	The spermatozoa or male germ cells are developed in the testes and are present in enormous numbers i	4.67 KB	2019-12-21	3	69
GrayAnatomy	6	The early segmentation of the human ovum has not yet been observed, but judging from what is known t	9.42 KB	2019-12-21	3	180
GrayAnatomy	9	Toward the end of the second week transverse segmentation of the paraxial mesoderm begins, and it is	1.21 KB	2019-12-21	3	18
GrayAnatomy	12	In reptiles, birds, and many mammals the allantois becomes expanded into a vesicle which projects in	21.3 KB	2019-12-21	3	373