Histological analyses of lethal yellow mouse embryos (A y /A y )at 90 and 132 h Post Coitum

Abstract
Strain C57BL/6J-A y /A y embryos are developmentally retarded in utero at 90 hpc and are resorbed by 132 hpc. The A y /A y developmental delay previously observed in vitro has now been confirmed in vivo. Apparently A y is involved in some aspect of cleavage stage metabolism.