div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=effect-of-endotoxin-on-resistance-in-the-early-period-of-ontogenesishtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Effect of Endotoxin on Resistance in the Early Period of Ontogenesis loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer2022020312575068361a28ab0f07af1e8fhtml5thumbnails1jpg width=140 height=200 divp© 1967 Nature Publishing Grouppdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=effect-of-endotoxin-on-resistance-in-the-early-period-of-ontogenesishtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Effect of Endotoxin on Resistance in the Early Period of Ontogenesis loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer2022020312575068361a28ab0f07af1e8fhtml5thumbnails2jpg width=140 height=200 divp© 1967 Nature Publishing Grouppdiv