|Description:||This photomicrograph revealed numerous numbers of Gram-negative, Bacteroides biacutus bacilli, or rod-shaped bacteria. These organisms were harvested from a blood-agar plate (BAP), after having been cultivated over a 48hr period.|
Bacteroides spp. are anaerobes, which means they thrive in environments devoid of oxygen. These are mutualistic organisms, harmoniously living within the human gastrointestinal tract, where they aid in the digestive process by breaking down complex molecules into smaller constituent parts. These bacteria also help protect their human hosts by preventing pathogenic, or opportunistic species from overpopulating the gut.