Ultrastructure of Mycoplasma orale Serotype 1 in Agar Growth

Abstract
SUMMARY: Vertical ultrathin sections of a colony of Mycoplasma orale serotype 1, N-1 strain, which had been isolated from a patient with leukaemia, have been examined by electron microscopy. In the micrographs, the ultrastructural appearance of Mycoplasma orale in agar growth could be divided into two patterns. One was a mycelial growth form which was observed in the surface area and resembled growth in broth. The other was a pattern of binary fission observed in the deep area of the agar. These growth features differ from those of human mycoplasmas previously reported.

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