Blas·to·my·ces noun \ˌblas-tə-ˈmī-ˌsēz\
: a genus of yeastlike fungi that contains the causative agent (B. dermatitidis) of North American blastomycosis and that formerly included the causative agent (Paracoccidioides brasiliensis synonym B. brasiliensis) of South American blastomycosis
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