Left: Mycobacterium tuberculosis is the bacterium that causes most cases of tuberculosis in humans.
Left: An electro micrograph of a varicella-zoster virus, which causes chickenpox and shingles.
Left: A photomicrograph of the fungus Aspergillus fumigatus.
Left: Plasmodium falciparum, the protozoa that is the cause some cases of malaria
Left: Human Prion protein
Left: parasitic worms such as hookworms and whipworms