Treponema pallidum buds, granules, and cysts as found in human syphilitic chancres and seen in fixed unstained smears observed under dark-ground illumination.
D002601:Chancre; D003560:Cysts; D003594:Cytoplasmic Granules; D006801:Humans; D008027:Light; D008029:Lighting; D014210:Treponema pallidum
TREPONEMA PALLIDUM