BSIP / SCIENCE PHOTO LIBRARY BSIP / SCIENCE PHOTO LIBRARY
Sarcina bacteria. Coloured scanning electron micrograph (SEM) of Sarcina sp. bacteria. These Gram-positive rounded bacteria (cocci) typically occur in groups of four (as at upper centre). They naturally occur in the guts of humans and animals. Magnification: x15,000 at 35mm size.
Model release not required. Property release not required.