Fig. 5From: Standardized ethanol extract, essential oil and zerumbone of Zingiber zerumbet rhizome suppress phagocytic activity of human neutrophilsE. coli engulfment by neutrophils treated with test samples i.e., (a) negative control, (b) positive control, (c) Z. zerumbet extract (50 μg/mL), (d) Z. zerumbet essential oil (50 μg/mL), (e) zerumbone (10 μg/mL)Back to article page