div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5page1jpg target=_blank img data-url=hiv-requires-multiple-gp120-molecules-for-cd4-mediated-infectionhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: HIV requires multiple gp120 molecules for CD4-mediated infection loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5thumbnails1jpg width=140 height=200 adivp© 1990 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5page2jpg target=_blank img data-url=hiv-requires-multiple-gp120-molecules-for-cd4-mediated-infectionhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: HIV requires multiple gp120 molecules for CD4-mediated infection loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5thumbnails2jpg width=140 height=200 adivp© 1990 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imagea href=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5page3jpg target=_blank img data-url=hiv-requires-multiple-gp120-molecules-for-cd4-mediated-infectionhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: HIV requires multiple gp120 molecules for CD4-mediated infection loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader040vdocumentssitereader040viewer2022020523575068821a28ab0f07b07b3ehtml5thumbnails3jpg width=140 height=200 adivp© 1990 Nature Publishing Grouppdiv