|Description:||Initially filled with a selective growth medium containing thistle seed extract, extracted from the seeds of the Guizotia abyssinica plant, each of these three glass test tube containers were inoculated with a fungal organism. The outer two tubes were each inoculated with Cryptococcus neoformans organisms, while the central tube was inoculated with Candida albicans organisms. This selective growth medium gave rise to colonies, the outer two tubes producing a brown pigment, identifying them as C. neoformans, and the middle colony produced no pigment, hence remaining white.|
Candidiasis is a fungal infection caused by yeasts that belong to the genus Candida. There are over 20 species of Candida yeasts that can cause infection in humans, the most common of which is C. albicans. Candida yeasts normally live on the skin and mucous membranes without causing infection; however, overgrowth of these organisms can cause symptoms to develop. Symptoms of candidiasis vary depending on the area of the body that is infected.
Cryptococcosis is an infection caused by fungi that belong to the genus Cryptococcus. There are over 30 different species of Cryptococcus, but two species – Cryptococcus neoformans and Cryptococcus gattii – cause nearly all cryptococcal infections in humans and animals. Although many people who develop cryptococcosis have weakened immune systems, some are previously healthy.