биогенное загрязнение(Two general categories of control experiments were performed to assess two possible modes of biogenic contamination of the reaction products. Alexander Demidov)
поражение излучением(Radioactive contamination, also called radiological contamination, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable (from IAEA definition). WAD Alexander Demidov)
