A circular, itchy lesion caused by a dermatophyte infection in an animal is most directly associated with:
Correct answer: D. Keratin invasion by fungal hyphae
- A. Protozoal multiplication in erythrocytes
- B. Viral replication in neurons
- C. Bacterial growth in muscle tissue
- D. Keratin invasion by fungal hyphae
Explanation
Dermatophytes grow in keratinized tissues such as the skin, hair, and nails, producing superficial circular lesions. They do not normally invade deep muscle or multiply inside red blood cells.
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About Veterinary Microbiology and Immunology
Covers the structure, classification, growth and transmission of bacteria, viruses, fungi and other disease causing microorganisms in animals. It explains innate and acquired immunity, antibodies, antigens, vaccination, hypersensitivity and diagnostic methods, while distinguishing infectious agents from the immune responses they produce.
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