Table 1. Effect of the green tea extract, EGCG, black tea extract, and theaflavins on the viability of U937-3xκB and U937 macrophage-like cells.

Compounds	Cell viability (%)
	U937-3xκB	U937 macrophage-like cells
Green tea extract (μg/ml)
250	83.3 ± 6.7	58.4 ± 8.2
125	99.0 ± 7.3	89.2 ± 6.6
62.5	95.7 ± 1.8	113.4 ± 14.2
EGCG (μg/ml)
250	74.7 ± 3.5	17.5 ± 18.7
125	95.2 ± 2.5	46.6 ± 15.7
62.5	99.8 ± 5.2	87.5 ± 3.1
Black tea extract (μg/ml)
500	94.0 ± 2.6	98.7 ± 8.1
250	91.9 ± 3.6	101.7 ± 8.5
125	95.24 ± 1.3	107.2 ± 5.2
Theaflavins (μg/ml)
500	35.2 ± 6.0	41.0 ± 3.0
250	72.9 ± 2.7	67.6 ± 4.6
125	96.8 ± 8.2	108.8 ± 11.0
None	100 ± 0.8	100 ± 2.3