Table 2 Concentrations (mean μg.kg^-1 ± standard error) of arsenic, cadmium, chromium, lead and nickel as measured in hair and bladder tissue, from controls and case lesions.

Bladder tissue

Controls (n = 17)

19.94 ± 6.46

21.60 ± 2.02

269.41 ± 38.18

10.29 ± 1.84

80 ± 30

All cases (n = 37)

23.00 ± 2.62

25.91 ± 1.95

247.84 ± 33.36

14.73 ± 2.87

70 ± 10

Carcinomas (n = 18)

17.94 ± 4.21

20.83 ± 2.13

283.89 ± 41.85

13.33 ± 3.77

60 ± 10

Hair

Controls (n = 13)

59.54 ± 12.44

16.25 ± 3.01

123.85 ± 25.83

460.77 ± 176.78

90 ± 20

All cases (n = 23)

61.96 ± 8.25

23.20 ± 2.39^a

634.35 ± 127.78^a

1095.22 ± 214.77^a

300 ± 50^a

Carcinomas (n = 10)

58.30 ± 12.69

21.61 ± 3.44

559.00 ± 198.40^a

960.00 ± 318.04

280 ± 80^a