This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Reconstructive Techniques, Subject name: Surgery
Skin grafts stored at 4degC can survive up to? 
Select and explain. 
A. 1 week, B. 2 weeks, C. 3 weeks, D. 4 weeks
B: 2 weeks
Answer: B: 2 weeks 
Explanation: ANSWER: (B) 2 weeksREF: Facial Plastic and Reconstructive Surgery by Ira D. Papel Page 44,http://sydney.edu.au/medicine/foundation/sydneybums/research/msg.phpExcess split-skin autografts harvested and meshed during a surgical session are often stored atshort-term for later burn surgery or graft failure.The current procedure in skin graft storage involves wrapping the meshed autograft on a piece of ringer lactate or normal saline-moistened gauze, transferring it into a sterile container and storing it in a 4deg C for 2 weeks. The graft should never be totally immersed in saline because it will become macerated. After 14 days of storage the respiratory activity of skin graft reduced by 50%.