div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: CELULAS MADRE Y VALVULAS CARDIACAS src=https:reader031fdocumentsmxreader031viewer2022012103616a0e1a11a7b741a34e508chtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv