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J Bacteriol. 1971 August; 107(2): 543-547
Copyright © 1971 American Society for Microbiology. All Rights Reserved.

Homology of Ribosomal Ribonucleic Acid of Diverse Bacterial Species with Escherichia coli and Bacillus stearothermophilus

^a Department of Microbiology, University of Illinois, Urbana, Illinois 61801

ABSTRACT

Hybridization competition experiments were used to examine the ribosomal ribonucleic acid (rRNA) homologies of 22 bacteria and 3 higher organisms with Escherichia coli and Bacillus stearothermophilus. Although little or no homology was observed with the higher organisms, the bacteria showed a wide range of homologies. Organisms whose rRNA showed closer homology to E. coli rRNA showed less rRNA homology to B. stearothermophilus rRNA and vice versa.

¹ Present address: Division of Research, National Jewish Hospital and Research Center, Denver, Colo. 80206.

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