Antigenic relationship between American and African isolates of Blastomyces dermatitidis as determined by immunofluorescence.

The antigenic relationship between American and African isolates of Blastomyces dermatitidis was investigated through the use of the fluorescent antibody technique. Preliminary results suggest that the American and African isolates studies are not antigenically identical. The American isolates share antigens with the African ones; however, it appears that they also possess distinct antigens. Additional studies are necessary to confirm these findings and to draw any conclusion whether the African isolates represent a serotype(s) of B. dermatitidis or a distinct species.