Figure 4From: A nebulized complex traditional Chinese medicine inhibits Histamine and IL-4 production by ovalbumin in guinea pigs and can stabilize mast cells in vitro Cytotoxic effect of the CTCM in P815 cells. Various concentrations of CTCM (1, 10, 100 and 1000 μg/ml) were incubated with P815 mast cells for 9 hr. The cell viabilities were measured by MTT assay to determine the percentage of viable cells present. No significant difference between the CTCM-treated group and the control was seen (P >0.05).Back to article page