Home | | Medical Microbiology | Blastomyces dermatitidis

Chapter: Medical Microbiology: An Introduction to Infectious Diseases: Cryptococcus, Histoplasma, Coccidioides, and Other Systemic Fungal Pathogens

| Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail |

Blastomyces dermatitidis

Blastomyces dermatitidis is a dimorphic fungus with some characteristics similar to thoseof Histoplasma.

BLASTOMYCES

Blastomyces  dermatitidis

Blastomyces dermatitidis is a dimorphic fungus with some characteristics similar to thoseof Histoplasma. Growth develops in the yeast phase in tissues and in cultures incubated at 37°C. The yeast cells are typically larger (8–15 mm) than those of H. capsulatum,with broad-based buds and a thick wall (Fig 49–3). The mold phase appears in culture at 25°C. Hyphae are septate and produce round to oval conidia sufficiently similar to the micro-conidia produced by H. capsulatum to cause confusion between the two in young cul-tures. Although older cultures may produce chlamydoconidia, B. dermatitidis produces no structure as distinctive as the tuberculate macroconidium of Histoplasma.



Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail


Copyright © 2018-2020 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.