Dermatophytes
in vivo and in culture
Epidermophyton floccosum
Smooth club shaped macroconidia with rounded ends
in culture (Unstained).
Microsporum canis
The affected hair is surrounded by a sheath of spores.
This location of the spores is called «ectothrix»
(Unstained).
Microsporum canis
An enlargement of the preceding slide clearly shows
the sheath of round spores (Unstained).
Microsporum canis
The macroconidia have several septa and small knoblike extrusions (Cotton blue stain).
Microsporum canis
Spreading, woolly white colony on Sabouraud agar.
Microsporum gypseum
The macroconidia are numerous and have no more
than five septa and small knob-like extrusions
(Unstained).
Microsporum gypseum
Colonies on Sabouraud-agar are rapidly growing,
powdery, and cinnamon-tan.
Microsporum vanbreuseghemii
Cylindrical to cigar-shaped, double walled, septate
macroconidia (Cotton blue stain).
Trichophyton kuryangei
Numerous elongated or pyriform microconidia in
culture (Cotton blue stain).
Trichophyton mentagrophytes
Round microconidia and spirals in a culture on
Sabouraud agar (Unstained).
Trichophyton rubrum
Mycelium and arthrospores in skin scales of eczema
marginatum (of Hebra) (Stained with Parker ink in
potassium hydroxide).
Trichophyton rubrum
Enlargement of the preceding slide. Blastospores and
arthrospores in skin scales of eczema marginatum (of Hebra)
(Stained with Parker ink in potassium hydroxide).
Trichophyton rubrum
Blastospores and arthrospores in skin scales (Stained
with Parker ink in potassium hydroxide).
Trichophyton rubrum
Delicate colourless mycelium and small pyriform
(pear-shaped) microconidia in a culture on
Sabouraud’s agar from T. rubrum (Unstained).
Trichophyton rubrum
Delicate colourless mycelium and small pyriform
(pear-shaped) microconidia in a culture on
Sabouraud’s agar from T. rubrum (Unstained).
Trichophyton rubrum
Delicate colourless mycelium and small pyriform
(pear-shaped) microconidia in a culture on
Sabouraud’s agar from T. rubrum (Unstained).
Trichophyton soudanense
Septate branched hyphae forming arthroconidia
(Unstained).
Trichophyton tonsurans
Hyphae with teardrop microconidia and a
chlamydoconidium (Unstained).
Trichophyton violaceum
In the infected hair numerous round spores are present.
This location of the spores is called «endothrix»
(Unstained).
Trichophyton violaceum
Tangled, branched, irregular hyphae from a culture on
Sabouraud’s agar (Unstained).