Assertion: lipid's virus | /r/AtLocation | bacteria
Facets:
value: on an agar plate
type: LOCATION
Source sentences:
text: In the early 20th century, the English bacteriologist Frederick Twort discovered a group of viruses that infect bacteria, now called bacteriophages (or commonly 'phages'), and the French-Canadian microbiologist Félix d'Herelle described viruses that, when added to bacteria on an agar plate, would produce areas of dead bacteria.