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KOH test on a vaginal wet mount, showing slings of pseudohyphae of Candida albicans surrounded by round vaginal epithelial cells, conferring a diagnosis of candidal vulvovaginitis. The KOH test , also known as a potassium hydroxide preparation or KOH prep , is a quick, inexpensive fungal test to differentiate dermatophytes and Candida albicans ...
Sabouraud agar or Sabouraud dextrose agar (SDA) is a type of agar growth medium containing peptones. [1] It is used to cultivate dermatophytes and other types of fungi , and can also grow filamentous bacteria such as Nocardia .
When grown in a laboratory, Candida appears as large, round, white or cream (albicans means "whitish" in Latin) colonies, which emit a yeasty odor on agar plates at room temperature. [13] C. albicans ferments glucose and maltose to acid and gas, sucrose to acid, and does not ferment lactose, which helps to distinguish it from other Candida ...
The type of medium in the agar plates is also important. Chromagar Candida is a differential medium used to identify different Candida species. When grown on this medium, C. albicans is light green, C. tropicalis is steel blue with purple around the edges, and C. krusei is rose pink with white around the edges. [7]
Gram stain of Candida albicans from a vaginal swab, showing hyphae, and chlamydospores, which are 2–4 μm in diameter.. A chlamydospore is the thick-walled large resting spore of several kinds of fungi, including Ascomycota such as Candida, [1] Basidiomycota such as Panus, [2] and various Mortierellales species. [3]
While Candida albicans is the most common yeast species associated with vaginal thrush, infection by other types of yeast can produce similar symptoms. A Hungarian study of 370 patients with confirmed vaginal yeast infections identified the following types of infection: [18] Candida albicans: 85.7%; Non-albicans Candida (8 species): 13.2%
Germ tubes of Candida albicans. A germ tube is an outgrowth produced by spores of spore-releasing fungi during germination.. The germ tube differentiates, grows, and develops by mitosis to create somatic hyphae.
The blastoconidia form is a part of the normal flora, while the hyphal form can be considered pathogenic and cause infection. [8] Candida albicans pseudohyphae located at number 1. For example, Candida albicans exists in different forms depending on certain environmental conditions, and the dimorphic nature of Candida albicans is a major ...