div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentcertificate-of-performance-corona-virus-1-the-above-titer-of-virus-was-testedhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Certificate of Performance - Corona Virus 1 · the above titer of virus was tested for viral presence by cytopathic effect observation on cell culture 5 Test result: No multiplicity loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsusreader034viewer202205200360165b7b9dd43a71c23245e5html5thumbnails1jpg width=140 height=200 divdiv