CHAPTER 21 DERMATOPHYTOSIS 335
(a)(c)(b)Fig. 21.19. (a)Microsporum canis: macroconidia are spindle shaped and thick walled with a terminal knob.
(b)Microsporum gypseum: macroconidia are spindle to cigar shaped and thin walled. (c)Trichophyton menta-
grophytes: abundant microconidia common; cigar-shaped macroconidia uncommon.
Fig. 21.20.Dermatophyte colonies on culture are not pigmented; pigmented cultures are contaminants.