a bacteriophage or phage is a virus that infects and replicates within bacteria and archaea. bacterial cell and

bacteriophage bacterial cell structure typical virus phage capsid head nucleic acid dna whiskers baseplate sheath collar domain genome central tail tube spike fiber marine viruses duplodnaviria infect bacteria archaea biology microbiology infection illustration medicine immune microorganism epidemic organism infected human isolated medical background macro illness microscope immunity biotechnology infectious