Abstract
Acriflavine-treated cells of C. albicans plated on a medium containing glucose as the principal carbon source gave rise to numerous colonies, most of which grew when replica-plated onto a similar medium containing sodium acetate substituted for glucose. Of the small fraction of colonies from the glucose medium which failed to replicate, some were found to be true petites, deficient for cytochromes a and b; others possessed complete cytochrome spectra, like those of their wild-type parents, but, nevertheless, respired at reduced rates on both fermentable and non-fermentable substrates. The role of the conventional cytochrome system in a wild-type culture was indicated by the strong inhibition of its respiration by cyanide, azide and antimycin A.
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