Rose Bengal Agar (RBA)- Introduction, Principle, Composition, Test Procedure, Colony Characteristics, Uses, and Keynotes

Fungal growth on Rose Bengal Agar (RBA) at centre

Introduction Rose Bengal Agar (RBA) is a selective medium for isolating fungi. It contains rose bengal dye, which inhibits bacterial growth. This medium supports the growth of various fungi. Chloramphenicol in RBA further suppresses bacterial contamination. Scientists and clinicians use it for environmental and clinical …

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Slide Culture Technique for Fungi- Introduction, Requirement, Procedure, Uses, Disadvantage, and Keynotes

Slide Culture Technique for Fungi- Introduction, Requirement, Procedure, Uses, Disadvantage, and Keynotes

Introduction The Slide Culture Technique for fungi allows detailed observation of fungal structures. It provides a clear view of spores and hyphae. This method uses a small block of agar on a slide. The technique is beneficial for identifying molds. You place a coverslip on …

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Fonsecaea: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Fonsecaea: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Fonsecaea is a genus of fungi commonly associated with human and animal infections. It belongs to the class Eurotiomycetes and the order Chaetothyriales. The most clinically relevant species within this genus is Fonsecaea pedrosoi, which is known to cause chromoblastomycosis, a chronic and localized …

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Microsporum ferrugineum: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Microsporum ferrugineum in LPCB taese mount of culture microscopy showing typical bamboo hyphae and lacking production of both microconidia and macroconidia

Introduction Microsporum ferrugineum is a species of dermatophytic fungus that belongs to the genus Microsporum. Dermatophytes are a group of fungi that are capable of infecting and colonizing the outer layers of the skin, hair, and nails, causing various dermatophytosis or “ringworm” infections in humans …

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Malassezia: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Gram-positive to variable yeast cells and short hyphae of Malassezia in Gram staining of culture

Introduction Malassezia is a genus of yeast-like fungi that belongs to the class Malasseziomycetes. These fungi are part of the normal skin microbiota of humans and other animals, commonly found on the skin surfaces, particularly in sebum-rich areas such as the scalp, face, chest, and …

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Bipolaris: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Bipolaris is a genus of filamentous fungi belonging to the family Pleosporaceae within the order Pleosporales. These fungi are commonly found in various environments, such as soil, plant debris, and decaying vegetation. Bipolaris species (they) are known to be plant pathogens, causing a range …

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Epidermophyton floccosum: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Epidermophyton floccosum is a dermatophyte fungus belonging to the group of fungi responsible for causing superficial fungal infections in humans and animals. Dermatophytes are known for their ability to infect the skin, hair, and nails, causing conditions collectively referred to as dermatophytosis or ringworm …

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Sporothrix schenckii: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Sporothrix schenckii colony morphology on SDA

Introduction Sporothrix schenckii is a dimorphic fungus and the causative agent of the infection known as sporotrichosis or “rose gardener’s disease.” It is a relatively common fungal pathogen found worldwide, and it primarily affects the skin and subcutaneous tissues, although it can occasionally spread to …

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