div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader042vdocumentsmxreader042viewer2022020523575068211a28ab0f07aebf23html5page1jpg target=_blank img data-url=bacterial-origin-of-certain-viruses-identity-of-the-eaton-agent-with-streptococcushtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Bacterial Origin of Certain Viruses: Identity of the Eaton Agent with Streptococcus MG loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentsmxreader042viewer2022020523575068211a28ab0f07aebf23html5thumbnails1jpg width=140 height=200 adivp© Nature Publishing Group1963pdiv