Colonies of trichophyton rubrum isolated from toenail (left-right): primary isolation from scrapings on sabouraud's dextrose agar with cycloheximide, chloramphenicol and gentamicin (14 d); greenish colonies on littman oxgall agar (14 d); restricted, red colony without ph change on bromocresol purple milk solids glucose agar (10 d). James scott.
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