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Proc Natl Acad Sci U S A. 1977 Nov;74(11):5088-90.

Phylogenetic structure of the prokaryotic domain: the primary kingdoms.

Abstract

A phylogenetic analysis based upon ribosomal RNA sequence characterization reveals that living systems represent one of three aboriginal lines of descent: (i) the eubacteria, comprising all typical bacteria; (ii) the archaebacteria, containing methanogenic bacteria; and (iii) the urkaryotes, now represented in the cytoplasmic component of eukaryotic cells.

PMID:
270744
PMCID:
PMC432104
[Indexed for MEDLINE]
Free PMC Article

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