FIG. 4.

Chitin and chitosan contents of C. neoformans KN99α and selected deletion strains. Measurements of strains were taken at 70 h of growth in liquid YPD at 25°C and reported as average nanomoles per milligram of dry weight of chitin, chitosan, and the total chitin plus chitosan as indicated. Each measurement represents the average of three or more independent cultures for each strain. Double daggers indicate measurements that were not significantly different from that of the wild type (P > 0.001). Strains or deletions are indicated at the bottom of the graph. Error bars indicate standard deviations.