John Mathyamuthan

health immunity mammals diversity diversity mammals biological control red weevil rhinoceros beetle pest coconut globa warming permafrost deserts rain forests taiga tundra world biomes ecosystem heredity humans mutation genetic types cell membrane antigens antibodies active and passive immunity acquired immunity mechanism human defense transmission pathogenicity clinical symptoms anthrax weather pattern tamil language tamil habitat loss biodiversity ozone depletion medicine venom elisa immunology bllod group rh factor