Table 2 The Cytotoxic Effect of Naetakchunkeumsan (NTCKS) Water-extract on RAW 264.7 Macrophage Cells by MTT Assay

NTCKS Concentration ㎍/㎖)	Cell Viability (% of control)
Control	100 ± 8.53
50	99.83 ± 8.28
100	97.47 ± 8.79
150	95.59 ± 12.13
200	90.50 ± 12.45
400	81.48 ± 7.89*

Valuses are the mean ± SD of the three independent experiments.
Control : untreated with NTCKS
50, 100, 150, 200 and 400 : treated with NTCKS (50, 100, 150, 200 and 400㎍/㎖)
* p < 0.05 compared to control