FIG. 43.1 Human pathogens. (a) Human immunodeficiency virus (HIV); (b) cholera bacteria; (c) a malaria parasite (green) inside a swollen red blood cell; (d) ringworm (a fungus); (e) schistosome (a worm).
Source; b. Juergen Berger/Science Source; c. Dr. Tony Brain/Science Source; d. David Scharf /Science Source; e. Scott Camazine/Getty.