THE INTRACELLULAR STRUCTURES OF A MYCOBACTERIUM

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Abstract
Ultrathin sections of cells of M. tuberculosis, strain BCG, examined electron microscopically consist of a delicate cell wall surrounding the protoplast which includes dense, electron-scattering granules, and a clear nuclear area containing fibrous material with fine granules attached to it. In the dense, electron-scattering cytoplasmic particles internal structure is not revealed, other than some vacuolation as a result of electron bombardment.