| umls-concept:C0686817 | skos:definition | MSH: Cells lacking a nuclear membrane so that the nuclear material is either scattered in the cytoplasm or collected in a nucleoid region.,CSP: cells such as those of bacteria and the blue green algae which lack a true nucleus or nuclear membrane so that the nuclear material is either scattered in the cytoplasm or collected in a nucleoid region.,NCI: Organisms without a cell nucleus or any other membrane-bound organelles. Most prokaryotes are bacteria but the group includes both the Bacteria and the Archaea. Eukaryota, Bacteria, and Archaea are now considered the top nodes of a three-domain taxonomy system. | lld:umls |
