Figure 8From: Detection in chick embryo of fetoproteins not recognized by the dam's immune system and of soluble alloantigens. Presumptive teratogenic and abortogenic capacity of their specific IgYTwo 3.5 days-old chick embryos showing few differences in their external aspect. The embryo control is on the right. On the left the embryo shows mainly a minor delay in its development.Back to article page