Fine structure in the cell wall of an unidentified bacterium from the human mouth

The author examined with electron microscope the rod-shaped bacteria obtained from the human mouth, which were peritrichous and Gram stain positive. Observations revaled the granules of 15 mμ-25 mμ in size being arranged neatly and hexagonally in the cell wall. Moreover, these granules were found to detach themselves quite readily by a slight physical process, disclosing the underlying layer. These seemed to show most probably a portion of the fine structure in the cell wall of an unidentified bacterium from the human mouth.