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Random articles

AIDS (acquired immunodeficiency syndrome)

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What is AIDS?

AIDS (acquired immunodeficiency syndrome) is a virus which destroys the immune system and leaves the body vulnerable to debilitating infections.

HIV antibody test

This test detects HIV antibodies in blood or other body fluids. HIV, human immunodeficiency virus, is the virus that causes AIDS (acquired immunodeficiency syndrome). When HIV enters the body, such as through contact with an infected individual or contaminated needle, the immune system responds by p...Read more

Gram stain procedure

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This stain for differentiate between G +ve bacteria (which accept staining) and G -ve bacteria (which not accept staining).

Steps:
-Prepare your clear slide and put one drop of normal saline.
-Take specimen from the colony and mix it well with normal saline.
-Leave for dryness on air then fix it on burner.
-Then pour Crystal Violet stain on the slide and leave it for 1 minute.
-Wash gently with water.
-Then pour Iodine stain on the slide and leave it for 1 minute.
-Wash gently w...Read more

Antibiotic Susceptibility Test

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This test for testing number of antibiotics against certain organism to find the best one and the most effective on this organism.

Steps:
-Take a swap from the colony by a sterile wire loop and culture it on Muller-hinton agar.
-Leave it incubated for 24 hours at 37ºC.

Result:
You notice now the larger clear zone around an antibiotic means that this antibiotic is the best.
See Samples below......Read more