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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