Source:http://linkedlifedata.com/resource/umls/id/C0008046
MSH: The developmental entity of a fertilized chicken egg (ZYGOTE). The developmental process begins about 24 h before the egg is laid at the BLASTODISC, a small whitish spot on the surface of the EGG YOLK. After 21 days of incubation, the embryo is fully developed before hatching.,CSP: domestic chicken or any other bird at any stage of development prior to hatching.