The fore and hind limbs are .0mm in length,their distal end shows web—footed form,The allanto-chorion is . Cm in Iength,outer aspect of the chor- ionic membrane grows out cotyledons.
The fore and hind limbs are .0mm in length,their distal end shows web—footed form,The allanto-chorion is . Cm in Iength,outer aspect of the chor- ionic membrane grows out cotyledons.
尿囊绒毛膜长.cm,膜表面有绒毛叶个。