Among the iodine-containing compounds, viz., iodoacetamide (IA), iodoacetic acid (IAA), and potassium iodide (KI) examined for sensitization of Micrococcus radiophilus, IA was found to be the most effective. Vitamin K5 and N-ethylmaleimide (NEM) did not produce any sensitization. The large difference in the radioresistance of broth and buffer cultures of M. radiophilus has been attributed to an exceptionally efficient de novo synthesis of repair enzymes during irradiation in broth.

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