This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
HIV virus can be isolated from all except - 
Select and explain. 
A. Semen, B. Saliva, C. Blood transfusion, D. Skin scraping
D: Skin scraping
Answer: D: Skin scraping 
Explanation: HIV virus is transmitted thtough semen,saliva,blood transfusion REF:<\p> MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.583