Under a high magnification of 15549x, this colorized scanning electron micrograph (SEM)
depicted some of the ultrastructural details seen in the cell wall configuration of a number of Gram-positive Mycobacterium tuberculosis
bacteria. As an obligate aerobic organism M. tuberculosis can only survive in an environment containing oxygen. This bacterium ranges in length between 2 - 4 microns,
and a width between 0.2 - 0.5 microns.
Photo: Janice Haney Carr
This image is in the public domain and thus free of any copyright restrictions.