Fig. 4From: Standardized ethanol extract, essential oil and zerumbone of Zingiber zerumbet rhizome suppress phagocytic activity of human neutrophilsCD11b/CD18 expression activity by neutrophils treated with test samples i.e., (a) positive control, (b) Z. zerumbet extract (50 μg/mL), (c) Z. zerumbet essential oil (50 μg/mL), (d) zerumbone (10 μg/mL)Back to article page