Serological cross-reactivity among Sporothrix schenckii, Ceratocystis, Europhium, and Graphium species.

Ethanol-precipitable culture filtrate antigens of 100 strains of 75 species of the Sporothrix-Ceratocystis-Europhium-Graphium complex and 1 species of Botrytis were examined for neutral sugar components and for serological cross-reactivity with S. schenckii rabbit antiserum and human sporotrichosis sera by capillary precipitin and double immunodiffusion assay. Results revealed that cross-reactive species (60 of 77, ca.

Comparison of Coccidioides immitis arthrospore, mycelium, and spherule cell walls, and influence of growth medium on mycelial cell wall composition.

Comparative lipid content, cell wall yield, neutral monosaccharide, glucosamine, and protein (amino acid) contents of arthrospores, mycelia, and spherules of Coccidioides immitis Cash were studied. Cellular lipid contents were found in the decreasing order: spherules, arthrospores, mycelia. Lipid content of mycelia did not reach the level of arthrospores or spherules even when mycelia were grown on relatively rich media.