Fig. 2From: Substance P enhances lactic acid and tyramine production in Enterococcus faecalis V583 and promotes its cytotoxic effect on intestinal Caco-2/TC7 cellsScanning electron microscopic (SEM) images of E. faecalis V583 after 2 h exposure to SP. a Untreated V583, b V583 + 10−4 M SP. Scale bar 1 µmBack to article page