Bioassay-Guided Isolation of Nigracin, Responsible for the Tissue Repair Properties of Drypetes Klainei Stem Bark. - Sferrazza G; Corti M; Andreola F; Giovannini D; Nicotera G; Zonfrillo M; Serra M; Tengattini S; Calleri E; Brusotti G; Pierimarchi P; Serafino A (Frontiers in pharmacology, 2020)