div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Inactivation of Crystalline Pepsin src=https:reader035fdocumentsinreader035viewer2022080107575067d61a28ab0f07ad6240html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divp© 1936 Nature Publishing Grouppdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: Inactivation of Crystalline Pepsin src=https:reader035fdocumentsinreader035viewer2022080107575067d61a28ab0f07ad6240html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divp© 1936 Nature Publishing Grouppdiv