Cytochemical evidence of extramembranous carbohydrates on Ureaplasma urealyticum (T-strain Mycoplasma).

Cells of Ureaplasma urealyticum that were prepared by a ruthenium red technique demonstrated an extramembranous layer of polyanions of about 15 to 30 nm in width. Application of the concanavalin A-iron dextran strain indicated that the outer surface of this layer contained glucosyl-like residues.