This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
Hepatitis B virus is NOT present in 
Select and explain. 
A. Milk, B. Sweat, C. Stool, D. Lymph
D: Lymph
Answer: D: Lymph 
Explanation: (ref: Harrison's 18/e p2108)