Fig. 5

Macroscopic observation of the different groups of earthworms (Allolobophora caliginosa) after induction of surgical wounds and examination of wound healing; (A) worms were left untreated to the mercy of natural healing by Vaseline; (B) worms received Um-Al MOF; (C) worms received Um and (D) worms received Al-MOF, cut in the anterior part (circle))