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Table 6 Lethal dose at 50% reduction of the cell population

From: Phytomedical assessment of two Cymbopogon species found in Nkonkobe Municipality: toxicological effect on human Chang liver cell line

Cymbopogon validis Cymbopogon plurinodis
  Probit percent Actual percenta LD50 (μg/ml)a   Probit percent Actual percenta LD50 (μg/ml)a
Dose (μg/ml) 24 h 48 h 72 h 24 h 48 h 72 h 24 h 48 h 72 h Dose (μg/ml) 24 h 48 h 72 h 24 h 48 h 72 h 24 h 48 h 72 h
5 23.44 5.43 1.67 18.34 6.19 4.97 na na na 5 19.04 7.41 6.71 22.02 4.10 11.36 na na na
25 29.59 20.82 13.88 30.33 13.67 5.43 na na na 25 22.15 26.16 30.14 29.24 16.33 17.03 na na na
75 37.66 39.05 39.01 35.87 29.01 18.23 74.87 ± 1.41 na na 75 32.06 41.55 42.16 41.11 24.91 23.20 81.66 ± 1.40 na na
125 46.91 45.78 51.97 50.90 61.45 69.86 na 139.07 ± 1.29 122.06 ± 0.89 125 44.22 47.13 58.22 48.43 52.25 66.76 na 135.09 ± 1.30 120.02 ± 0.90
250 53.04 64.90 70.01 62.22 76.18 72.41 na na na 250 53.00 69.20 75.00 53.71 66.02 77.06 na na na
500 65.53 78.43 84.76 67.90 78.14 79.45 na na na 500 67.13 80.55 87.62 57.94 69.00 81.15 na na na
1000 78.33 88.34 90.55 74.48 80.69 83.82 na na na 1000 71.01 84.46 90.68 65.59 76.19 86.26 na na na
  1. aLD50 (50% of the cells have been killed); actual and probit percents were calculated using probit statistical analysis software “NCSS 2007”; a actual % = actual formulas (n is the number of cells in a group); na not applicable