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Indoor fungi grown for three weeks on malt extract agar from a swab wiped from an office in a university building in Finland. The office was abandoned by the occupant due to serious indoor air-related illness. Each of the numbered colonies on Panels (A–E) were separately tested for the presence of toxins. The reverse side of the plate in Panel (E) is shown in Panel (F) with the dark reverse of colonies 34 and 36 in contrast to colonies 31, 32, and 33.
