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Table 1 Clonogenic growth of primary breast cancer cells co-cultured with fibroblasts pre-treated with butein (2.5 μg/mL).

From: The chalcone butein from Rhus verniciflua Stokes inhibits clonogenic growth of human breast cancer cells co-cultured with fibroblasts

Clinical Sample # Mean number of colonies with butein pre-treatment (1 s.d.) Mean number of colonies without butein pre-treatment (1 s.d.)
1 0 (0) 13 (4)*
2 0 (0) 36 (9)*
3 0 (0) 6 (4) *
4 3 (2) 12 (5)*
5 7 (4) 29 (8)*
  1. *p value < 0.02 by two-tailed, unpaired t-test comparing means and s.d. of butein pre-treatment versus no pre-treatment