Sections of the wound centres for the two strains at different time points. Day 14 (a – MRL/MpJ wound centre, b – C57BL/6 wound centre), day 21 (c – MRL/MpJ wound centre, d – C57BL/6 wound centre), day 28 (e – MRL/MpJ wound centre, f – C57BL/6 wound centre) wound sections. E, epithelium; D, dermis; M, muscle. Arrows denote wound margins. Scale bar = 0.5 mm.