Archaea—one of the three primary domains of life alongside bacteria and eukaryotes—are often overlooked and sometimes ...

Prokaryotes are organisms whose cells ... archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple ...

Planctomycetes challenge our concept of the bacterial cell ... Archaea, Bacteria, and Eucarya. Proc Natl Acad Sci U S A 87, 4576–4579 (1990). Woese, C. R. & Fox, G. E. Phylogenetic structure ...