This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Skin grafts stored 4oC can survive up to? 
Select and explain. 
A. 1 week, B. 2 weeks, C. 3 weeks, D. 4 weeks
C: 3 weeks
Answer: C: 3 weeks 
Explanation: .SKIN GRAFTING: It is transfer of skin from one area (donor area) to the required defective area (recipient area). It is an autograft. Types - 1. PAIAL THICKNESS GRAFT (Split thickness graft--SSG) Also called as Thiersch graft, is removal of full epidermis + pa of the dermis from the donor area It may be * Thin SSG. * Intermediate SSG, all depends on the amount of thickness of dermis taken. * Thick SSG. Graft is stored at low temperature of 4degC for not more than 21 days. ref:SRB;s manual of surgery,ed 3,pg no 279