This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biological Materials & Stains, Subject name: Forensic Medicine
Specimen containing viral particle is preserved in? 
Select and explain. 
A. NaCl solution, B. Formaldehyde, C. 50% glycerine, D. Liquid nitrogen
C: 50% glycerine
Answer: C: 50% glycerine 
Explanation: Ans. (c) 50% glycerineRef. Textbook of forensic medicine and toxicology: Principles and practice by vij 4/e, p 33