核を持たない単細胞生物

a single-celled organism without a nucleus

a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma

膜で囲まれた核を持たない細胞をもつ単細胞生物。バクテリアが主な例ですが、藍藻類や放線菌、マイコプラズマも含まれます。