<0.05). 4. Histologic examination revealed that AM protected leukocyte infiltration and epithelial migration was nearly completed at 4 weeks. Terudermis(R) group showed mild neutrophil infiltration until 2 weeks and completion of epithelization at 4 weeks. Control group showed massive leukocyte infiltration until 4 weeks. 5. Microvessels were increased sharply at 1 week and control group at 1 and 4 week showed significant differences with Terudermis(R) group of same interval(p<0.05) but no differences were found with AM group(p<0.05). CONCLUSION: EGF and EGF-R were well preserved in freeze-dried AM. AM attached to collagen acted as excellent biologic dressing which had similar effect with Terudermis(R). AM showed anti-inflammatory action and healing was completed at 4 weeks after full-thickness skin defect.