 |
Arthrospores |
10 |
54,70 |
 |
Chlamydospores |
10 |
54,71 |
 |
Macro-and Micro-conidia (note show size relationship) |
11 |
72,73 |
 |
Conidiophore bearing conidia -- Aspergillus type |
11 |
53 |
 |
Conidiophore bearing conidia -- Penicillium type |
13 |
72, 73 |
 |
Sporangium containing sporangiospores |
12 |
55 |
 |
Rhizoids |
12 |
76 |
 |
Alternaria sp. -- note "hand grenade" shaped macro-conidia |
17 |
122-123 |
 |
Rhizopus sp |
17 |
120-121 |
 |
Absidia sp. |
17 |
120-121 |
|
Mucor sp. -- note that all three organisms on slides 9, 10, and 11 all have sporangia containing
sporangiospores. The only way to tell them apart is to examine the location of the rhizoids coming off of their
hyphae. We will not ask you to differentiate these three or memorize the location of their rhizoids. |
17 |
76 |
 |
Aspergillus fumigatus -- colonial morphology |
18 |
200-201 |
 |
Aspergillus fumigatus -- conidiophore bearing conidia |
18 |
126-127 |
 |
Aspergillus niger -- colonial morphology |
18 |
200-201 |
 |
Aspergillus niger -- conidiophore bearing black conidia |
18 |
126-127 |
 |
Aspergillus sp. in histologic section of clinical specimen |
18 |
8-9 |
 |
Penicillium sp. -- conidiophore bearing conidia |
18 |
128-129 |
 |
Fusarium sp. -- typical banana-shaped conidia |
19 |
130-121 |
 |
Pseudallescheria boydii -- delicate conidia |
19 |
130-121 |
 |
Dog with brown ear discharge and red inflammation consistent with otitis externa |
21 |
32-33 |
 |
Malassezia (also known as Pityrosporum) -- a very common cause of otitis externa in dogs (especially those
with heavy, floppy ears) |
21 |
32-33 |
 |
Candida albicans -- germ-tubes formed after incubation in plasma |
20 |
160-161 |
 |
Candida albicans -- chlamydospore formation on cornmeal agar |
20 |
34-35 |
 |
Cryptococcus neoformans -- negative staining of capsule with India ink |
20 |
28-29 |
 |
Blastomyces dermatitidis -- thick-walled, budding yeast form |
23 |
24-25 |
 |
Blastomyces dermatitidis -- conidia found in the mycelial, or mold, form |
23 |
24-25 |
 |
Histoplasma capsulatum - seen intracellularly within a macrophage |
23 |
26-27 |
 |
Histoplasma capsulatum -- tuberculate chlamydospores |
23 |
26-27 |
 |
Coccidioides immitis -- arthrospores |
24 |
26-27 |
 |
Coccidioides immitis -- spherule |
24 |
26-27 |
 |
Sporothrix schenkii -- "cigar bodies" of the yeast phase seen in clinical specimens |
23 |
6-7 |
 |
Sporothrix schenkii -- "flowerette" arrangement of conidia seen in the mold phase |
24 |
28-29 |
 |
Sporothrix schenkii -- budding yeast form sometimes seen in clinical specimens |
24 |
28-29 |
 |
Sporothrix schenkii -- asteroid body seen in some clinical specimens |
24 |
6-7 |
 |
Fluorescing hair (under Wood's lamp) is seen in dogs and cats infected with some dermatophytes |
33 |
NA |
 |
Infected hair displaying ectothrix type of dermatophyte infection |
11 |
32-33 |
 |
Infected hair displaying endothrix type of dermatophyte infection |
11 |
32-33 |
 |
Dermatophyte test medium Tube #1 -- uninoculated Tube #2 -- + = red color (Microsporum gypseum) Tube
#3 -- negative (Aspergillus sp.) |
33 |
NA |
 |
Microsporum canis -- colonial morphology Top surface on left Reverse (bottom of plate) on right |
30 |
132-133 |
 |
Microsporum canis -- macro- and micro-conidia |
31 |
132-133 |
 |
Microsporum gypseum -- macro-conidia |
32 |
132-133 |
 |
Trichophyton sp. -- macro- and micro-conidia |
32 |
132-133 |
