Mycology and Virology Seminar Notes

Flashcards summarizing key concepts from Mycology and Virology seminar notes.

What are the basic structures of mycoses?

Cell wall, cell membrane, mycelium, hyphae (vegetative and aerial), capsule, cytoplasm, spores (sexual and asexual).

What is the function of 10% KOH preparation in microscopic diagnosis?

It helps in clearing tissues to visualize fungal elements such as hyphae.

Name three types of culture media used in mycology.

SDA, Mycosel, Potato Dextrose Agar.

List two methods for identification of yeast.

Germ tube test and Chlamydospores Corn Meal Agar

What are the four categories of medically important fungi?

Superficial, cutaneous, subcutaneous, opportunistic, systemic.

What is the mode of transmission for superficial mycoses?

Person to person contact and fomites.

What does Malassezia furfur cause?

Pityriasis or tinea versicolor.

Identify symptoms caused by Piedraia hortai.

Black piedra and black nodule on hair shaft.

What distinguishes dermatophytes from other fungi?

They are keratinophilic.

What is Tinea capitis?

Ringworm lesion of the scalp.

Describe Ectothrix infection.

Dermatophyte infection confined to the hair shaft surface.

What is Sporothrix schenckii known for?

Causing 'Rose gardener's disease' or sporotrichosis.

What is the laboratory diagnosis for Cryptococcus neoformans?

India ink preparation shows capsules surrounding the yeast.

Name two DNA viruses.

Hepatitis B virus and Adenovirus.

What is the significance of the Tzanck smear?

Diagnosis of Herpes simplex virus infections.

How can HIV be diagnosed?

ELISA, Western blot, and NATs.