Fig. 2From: Comparative in vitro cytotoxic, anti-inflammatory and anti-microbiological activities of two indigenous Venda medicinal plantsEffect of plant extracts on the production of nitrate and cell viability in unstimulated macrophage (a) and in macrophage activation (b). Aminoguanidine, an inhibitor of iNOS expression serves as positive control to confirm the functionality of the assay. E.coli LPS, inducer of iNOS activity, was used to demonstrate macrophage activation capacityBack to article page