Avian eggs lose water during incubation. Within a species, the rate of water loss can vary as a result of variations in nest humidity and because egg shells differ in their resistance to the diffusion ...

Founded in 1904, The Journal of Infectious Diseases is the premier publication in the Western Hemisphere for original research on the pathogenesis, diagnosis, and treatment of infectious diseases, on ...

The fetal membranes consist of the chorion, amnion, yolk sac, and allantois. The chorion has three layers: cytotrophoblastic, chorionic connective tissue, and basement membrane. The chorion lies ...