Studies on a Radio-resistant Coccus Isolated from Bombay Duck (Harpodon nehereus) Lewis, N. F.,, 66, 29-35 (1971), doi = https://doi.org/10.1099/00221287-66-1-29, publicationName = Microbiology Society, issn = 1350-0872, abstract= SUMMARY: An extremely radio-resistant orange-red pigmented Micrococcus sp. was isolated from irradiated Bombay duck (Harpodon nehereus). The organism was a Gram-positive vegetative tetracoccus, catalase-positive, sensitive to heat and nonpathogenic. It differed from M. radiodurans by being smaller in size, salt-tolerant, hydrolysing gelatin very slowly, and much more resistant to gamma radiation. The radiation survival curve of the new coccus was sigmoidal, punctuated with a very large shoulder extending beyond 1.5 Mrad., language=, type=