Ellagitannins from Phyllanthus muellerianus (Kuntze) Exell.: Geraniin and furosin stimulate cellular activity, differentiation and collagen synthesis of human skin keratinocytes and dermal fibroblasts - Agyare, C; Lechtenberg, M; Deters, A; Petereit, F; Hensel, A (Phytomedicine, 2011)