div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=kochs-recent-researches-on-tuberculinhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Kochs Recent Researches on Tuberculin loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsusreader035viewer20220801075750679d1a28ab0f07ac58eahtml5thumbnails1jpg width=140 height=200 divp© 1897 Nature Publishing Grouppdiv