T lymphocyte 1. Lymphatic nodules are the building units of larger lymphatic organs. Lymph a. is identical with plasma. The spleen a. filters pathogens out of lymph. E. coli travels from our food into a person.
Rabies can infect humans or dogs or cats.
Infectious diseases are a. decreasing in frequency in the U.S. b. decreasing in frequency everywhere. Scientists suggest that the best way to fight some infectious diseases is to a. kill off all reservoir host species so that we are safe. Rapid mutation rates make an infectious organism a. more resistant to our immune system. Stop the use of antibiotics in animal feed. All of these 22.