This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Refrigerated blood stored up to 48 hours before transfusion can destroy which of the following 
Select and explain. 
A. HIV, B. Hepatitis B, C. Treponema pallidum, D. Plasmodium vivax
C: Treponema pallidum
Answer: C: Treponema pallidum 
Explanation: Treponema pallidum is killed in 1 to 3 days at 0-4degrees centigrade, so transfusion syphilis can be prevented by storing blood in the refrigerator before transfusion Stored frozen at -70deg C in 10% glycerol, or in liquid nitrogen (-130 deg C), it remains ble for 10-15 years. Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th edition; Pg:379