2 1 1At-tellurium colloid and Na2 1 1At injections, and their radiobiological effects

Na2 1 1At and2 1 1At−Te colloid injections were prepared. By comparison with tissue distribution of Na2 1 1At and2 1 1At−Te colloid injections it has been demonstrated that the2 1 1At−Te colloid is stable in vivo. It has been shown that the radiohalogen,2 1 1At, has huge and extensive radiobiological effects in studying on the changes in histopathology, enzyme histochemistry, chromosome aberration, micronucleus frequency of bone-marrow polychromatic erythrocytes and the injury effect of2 1 1At on experimental Ehrlich ascites cells.