Table 4.
Summary of genotoxicity parameters (L, Low urine uranium group (U<0.1 μg g−1 creatinine); H, High urine uranium group (U≥0.1 μg g−1 creatinine); ns, no significant differences between groups).
| genotoxicity parameter | evaluation year | ||||
|---|---|---|---|---|---|
| 1994 | 1997 | 1999 | 2001 | 2003 | |
| sister chromatid exchange (SCE) | 1>ha ns | H>L | 1>h ns | ns | |
| chromosomal aberrations (CA) | ns | ns | H>L | ns | |
| hypoxanthine–guanine phosphoribosyl transferase (HPRT) mutation frequency | h>1 (p=0.1) | h>1 ns | |||
a
lower case letters indicate non-significant findings.