Figure 4. Seven day-old growth of a
clinical isolate of Aspergillus flavus on Czapek-Dox agar
incubated at 30 °C. A: Formation of sclerotia is noted in
the culture (arrows in inset). Formation of sclerotia was noted
significantly more frequently in aflatoxin-producing strains than in
aflatoxin-nonproducing strains. B: Seven day-old growth of
another clinical isolate of Aspergillus flavus on Czapek-Dox
agar incubated 30 °C. This isolate has not formed sclerotia in
culture.