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Summary The dose-response for the induction of initial double-strand breaks (dsb) in DNA of human epithelioid cells by JANUS 0·85 MeV fission-spectrum neutrons was parabolic as assayed by a calibrated neutral filter elution technique. The relative biological effectiveness (RBE) of these neutrons...
Summary It is shown that paraquat treatment (1 h, 1 × 10 −5 mol/l) increases the activity of superoxide dismutase (SOD) in L5178Y (LY) R and S cells by about three times. When combined with X-irradiation, 0·5 h of treatment preceding irradiation increased the SOD activity two-fold and the...
Summary Radioactive 114m In from plasma proteins localises and is retained in developing rat spermatozoa.
Summary Mice were gavaged with zinc-65 solution, 8·6–19·3 kBq per mouse, and the whole-body retention and organ content of zinc-65 were measured at different times after administration. The age-dependence of the fractional absorption of zinc-65 from the gastrointesinal tract ( f 1 ), the...
Summary The effect of re-irradiation on the previously irradiated kidney was studied in the Large White female pig. Both kidneys of 14-week-old pigs were initially irradiated with a single dose of 3–7 Gy of 250 kV X-rays. The individual kidney glomerular filtration rate (GFR), effective renal...
Summary Primary chick embryo myoblasts can be a useful tool for studying the developmental events which accompany myoblast differentiation, particularly myoblast membrane fusion. To determine whether the electrical properties and/or fusion in these systems are affected by 50 Hz magnetic fields,...
Summary The effect of X-irradiation on the major proteins of human erythrocyte membranes have been examined. Samples of human erythrocyte ghosts and stripped ghosts were irradiated (up to 1·5 kGy) under air, N 2 or N 2 O. The effects on the main erythrocyte membrane proteins as well as on...
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