Phytother Res. 2010 Oct;24(10):1437-41.
Wound healing effects of noni (Morinda citrifolia L.) leaves: a mechanism involving its PDGF/A2A receptor ligand binding and promotion of wound closure.
Palu A, Su C, Zhou BN, West B, Jensen J.

Fresh noni leaf juice and noni leaf extracts significantly accelerated wound healing in mice, likely via ligand binding to platelet-derived growth factor and adenosine A2A receptors. (view original abstract at https://www.ncbi.nlm.nih.gov/pubmed/20878690).