Table 1

Calculation of LC50 values, confidence limits, regression equations and chi square values for different extracts with reference to vincristine sulfate
Sample LC50 (μg/ml) Range of confidence limit (μg/ml) Regression equation Chi square
VS 0.76 ± 0.04 0.57–0.82 Y= 3.16 + 2.98X 0.63
A. conyzoides 508.86 ± 6.62 390.12–655.23 Y = − 2.16 + 2.65* X 0.70
C. suffruticosa 41.16 ± 1.26 31.66–52.33 Y = 2.92 + 4.03*X 1.58
L. indica 2.65 ± 0.16 2.25–2.69 Y = 45.98*X + S32 1.70
L. aspera 181.67 ± 1.65 125.12–265.96 Y = 56.28X - 76.73 0.76
S. sophera 233.37 ± 7.74 156.74–361.99 Y = 51.49X - 71.00 1.15
S. torvum 478.40 ± 3.23 345.78–611.01 Y = 52.09* X - 79.45 0.93

Rahman et al.

Rahman et al. BMC Complementary and Alternative Medicine 2013 13:25   doi:10.1186/1472-6882-13-25

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