Candida albicans is ubiquitous but generally only becomes a problem when immunity is lowered (often called a yeast infection). It is a fungus and is shown budding in this image.
Illustration ID: YEAST-Candida-albicans
Russell Kightley
Illustration size: 14.3 Mpixels (40.8 MB uncompressed) - 3320x4296 pixels (11.1x14.3 in / 28.1x36.4 cm at 300 ppi)