div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentscoreader042viewer2022020523575068f31a28ab0f07b28ca6html5page1jpg target=_blank img data-url=documentfraxac2-instabilityhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: FRAXAC2 instability loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentscoreader042viewer2022020523575068f31a28ab0f07b28ca6html5thumbnails1jpg width=140 height=200 adivp© 1994 Nature Publishing Group http:wwwnaturecomnaturegeneticspdiv