<prompt> Tensile strength of wound aftr laparoscopic cholecystectomy in a 30yr old woman depends uponReplacement of type 3collagenExtensive cross linking of tropocollagenMacrophage activityGranulation tissue  <response>: ref Robbins, 8e p105 -106 Collagen is a ubiquitous protein with remarkable mechanical propeies. It is highly elastic, shows large during tropocollagen. The molecular component of a collagen fibril, consisting of three polypeptide chains coiled around each other. 