Microsporum canis macroconidia are spindle-shaped, rough, and taper to a knoblike end. Each contains >6 cells, separated by transverse septae.
The top right image shows an M. canis culture. The bottom right image shows M. canis in a lactophenol cotton blue preparation, showing large, spindle-shaped macroconidia.
36. CDC/Georg. (1970). Image #15475. This Petri dish culture plate contained an unknown growth medium, which grew a single colony of the dermatophytic fungal organism Microsporum canis. This was a typical strain, which gave rise to a wooly textured colony. PHIL public domain. https://phil.cdc.gov/Details.aspx?pid=15475 37. CDC/Georg. (1964). Image #15472. Under a magnification of 475X, this photomicrograph revealed some of the ultrastructural morphology exhibited by the fungus Microsporum canis. Of note are the large, multicellular, spindle-shaped macroconidia. PHIL public domain. https://phil.cdc.gov/Details.aspx?pid=15472
