div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader042vdocumentsusreader042viewer2022020522575067f21a28ab0f07ade1abhtml5page1jpg target=_blank img data-url=the-danish-cancer-researcher-johannes-fibiger-professor-in-the-universityhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Danish Cancer Researcher Johannes Fibiger Professor in the University of Copenhagen loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentsusreader042viewer2022020522575067f21a28ab0f07ade1abhtml5thumbnails1jpg width=140 height=200 adivp©1948 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader042vdocumentsusreader042viewer2022020522575067f21a28ab0f07ade1abhtml5page2jpg target=_blank img data-url=the-danish-cancer-researcher-johannes-fibiger-professor-in-the-universityhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: The Danish Cancer Researcher Johannes Fibiger Professor in the University of Copenhagen loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentsusreader042viewer2022020522575067f21a28ab0f07ade1abhtml5thumbnails2jpg width=140 height=200 adivp©1948 Nature Publishing Grouppdiv