close up in microscopic of clostridium tetani bacteria the cause of tetanus scientific and medical 3d

3d illustration abstract attack bacillus background bacteria bacterium binary fission biology blue cancer cell cells closeup clostridium tetani disease epidemic epidemiology germ health care human ill illness infection life macro medical medicine micro microbe microbiology microorganism microscope microscopic organism parasite pontiac fever research science scientific sick sickness single tetanus three dimensional virus