2020 · Lee et al demonstrated histological evidence of the subcapsular plexus supplying blood to the keloid rind flaps. 120 This technique is supported by data suggesting that fibroblasts at the core of the keloid have lower rates of apoptosis relative to a normal rate of fibroblast apoptosis in the keloid rind flap. 121, 122 The initial study of keloid core excision reported that 17 percent of.