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Scanning electron micrographs of particles isolated following treatment with enzyme, detergent, and hot acid of pigeon excreta (A and B) or cryptococcal cells grown on excreta agar (C) (magnification, ×15,000). The structures are remarkably similar to cryptococcal melanin ghosts (8, 16) and demonstrate what appear to be bud scars (A) and budding (B and C).
