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The swab is then streaked on a culture medium. The culture is incubated at 37 °C (98.6 °F) for several days, to allow development of yeast or bacterial colonies. The characteristics (such as morphology and colour) of the colonies may allow initial diagnosis of the organism causing disease symptoms. [60]
At 37 °C (99 °F) either in the laboratory or in host tissue, S. schenckii assumes its yeast form. Macroscopically, the yeast form grows as smooth white or off-white colonies. Microscopically, yeast cells are 2 to 6 μm long and show an elongated cigar-shaped morphology. [1]
Rhodotorula glutinis is an aerobic yeast characterized by pink, smooth colonies with a moist appearance. [2] Reproduction is typically by multipolar budding although pseudohyphae are occasionally produced. Sexual reproduction is by basidiospores arising from a teliospore developed from a mycelial clamp connection. [2]
Colonies of C. tropicalis on a Petri dish.. C. tropicalis is a vegetative cell [10] with the shape from round to oval ranging from approximately 2 – 10 micrometers. [3] A mould exhibits dimorphism [8] forming a single-celled yeast or so-called blastoconidia which reproduces by simple budding. [8]
Rhodotorula mucilaginosa cells, Methylene blue stain, magnification 400x. Rhodotorula is a genus of fungi in the class Microbotryomycetes.Most species are known in their yeast states which produce orange to red colonies when grown on Sabouraud's dextrose agar (SDA).
The colony surface is smooth and has a pasty texture. [1] [10] There is considerable cell and colony morphology when S. salmonicolor is grown in culture. [6] The budding yeast-like cells produced during the asexual stage are ellipsoidal to subcylindrical and 8–25 × 2–5.5 μm. They can occur singly or in pairs.
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 ...
Meyerozyma guilliermondii (formerly known as Pichia guilliermondii until its rename in 2010) is a species of yeast of the genus Meyerozyma whose asexual or anamorphic form is known as Candida guilliermondii. Candida guilliermondii has been isolated from numerous human infections, mostly of cutaneous origin, if only from immunosuppressed patients.