296 / FIELDS OF INSTRUCTION GRADUATE COURSES VY 602-VETERINARY PATHOLOGY 1. 5 credits Prerequisites: Degree in one of the medical sciences; suitable background in histology and approval of major professor. Topics in pathologic conditions affecting animals, with emphasis on cellular changes. VY 603-VETERINARY PATHOLOGY 2. 5 credits Prerequisite: VY 602. Continuation of VY 602. VY 622-VETERINARY HEMATOLOGY 1. 5 credits Prerequisite: Suitable background in biology, physical chemistry, biological chemistry, histology, physiology, and immunology. Topics on hematologic problems of domestic and laboratory animals, including poultry. VY 623-VETERINARY HEMATOLOGY 2. 5 credits Prerequisite: VY 622. Continuation of VY 622. VY 624-HELMINTHOLOGY. 5 credits Identical with ZY 624. Prerequisite: ZY 516. VY 625-PROTOZOOLOGY. 5 credits Identical with ZY 625. VY 626-IMMUNOLOGY OF ANIMAL PARASITES. 5 credits Prerequisites: MCY 302, BCH 578, MCY 505, VY 516 and/or consent of the instructor. Biological and biochemical aspects of host resistance and im- munity to endoparasites. VY 632-VETERINARY PHARMACOLOGY 1. 5 credits Prerequisites: Suitable background in the medical sciences; satisfactory work in physiology, biochemistry, and immunology. Selected problems in prevention, treat- ment, and control of animal diseases. VY 633-VETERINARY PHARMACOLOGY 2. 5 credits Prerequisite: VY 632. Continuation of VY 632. VY 634-VETERINARY TOXICOLOGY 1. 5 credits Prerequisites: VY 633 and suitable background in biochemistry, physiology, and pharmacology. Effects of toxic natural products and chemicals on animals. VY 635-VETERINARY TOXICOLOGY 2. 5 credits Prerequisite: VY 634. Continuation of VY 634. VY 642-VETERINARY MICROBIOLOGY 1. 6 credits Prerequisite: Suitable background in the medical sciences. Special emphasis in the bacteriology and/or virology of diseases limited to animals and the zoonoses. VY 643-VETERINARY MICROBIOLOGY 2. 6 credits Prerequisite: VY 642. Continuation of VY 642. VY 663-PARASITIC DISEASES IN THE TROPICS AND SUBTROPICS. 5 credits Identical with MCY 663, MED 663, ZY 663. See MCY 663. VY 682-VETERINARY RESEARCH TECHNIQUES 1. 5 credits The principles of biophysical science and their application to veterinary medical science. VY 683-PROBLEMS IN VETERINARY SCIENCE 2. 1 to 5 credits Prerequisite: VY 682. Continuation of VY 682. May be repeated with change of content up to a maximum of 5 credits. VY 690-SEMINAR IN VETERINARY SCIENCE. 1 credit May be repeated with change of content up to a maximum of 6 credits. VY 697-SUPERVISED RESEARCH. 1 to 5 credits Credit not applicable toward degree. May be repeated.