where the explosion took place acknowledged one of the doctors who treated the victims now has the radioactive isotope cesium 137 in his body. officials strangely claiming the contamination didn t come from treating blast victims but from eating seafood. cesium 137 has the feature of accumulating in fish, mushrooms, lichens and algae, an official statement says, with a certain degree of probability, we can assume this element got into the human bod through the products of food. on monday, putin told reporter no, sir background radiation had been found, but analysts are skeptical. moscow has a history of covering up nuclear incidents, including the meltdown at chernobyl in 1986, the history of that incident now the plot of an hbo series. burn and spread its poison until the entire continent is dead. reporter: it s unclear lea ie leaders will discuss the nuclear