Tumors of the choroid; most common intraocular tumors are malignant melanomas of the choroid. These usually occur after puberty and increase in incidence with advancing ...
Animate or inanimate sources which harbor disease-causing organisms and thus serve as potential sources of disease outbreaks. Reservoirs should be distinguished from vectors and carriers, ...
Animal disease whose pathologic mechanisms are sufficiently similar to those of a different human disease for the animal disease to serve as a model. The ...