in order to establish whether the mesencephalic alar plate ( i.e. , the primordium of the optic tectum ) of a quail embryo maintains its own rate of cytodifferentiation after transplantation into a chick embryo or whether this rate could be influenced by the host , we performed homotopic transplantations of the tectal primordium between the two species on day 2 of incubation ( e2 ) by removing the mesencephalic alar plate in the chick and replacing it with that of the quail embryo .
C0039433
tectal
C0025462
mesencephalic