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J Virol. 1972 July; 10(1): 150-152
Copyright © 1972 American Society for Microbiology. All Rights Reserved.
1 Department of Microbiology, The University of Texas at Austin, Austin, Texas 78712
ABSTRACT
Long-tailed azotophages of two different serological groups have deoxyribonucleic acid species whose densities correspond to a molar percentage of guanine plus cytosine of 52 to 53. Similar measurements on the short-tailed phages gave values of 56 to 57 moles percent. The azotophages include representatives of the three morphological types classified by Bradley as groups A, B, and C.
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