div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentorgreader042viewer2022020523575068871a28ab0f07b0921ehtml5page1jpg target=_blank img data-url=documenta-b-cell-deficient-mouse-by-targeted-disruption-of-the-membrane-exon-of-thehtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: A B cell-deficient mouse by targeted disruption of the membrane exon of the immunoglobulin μ chain gene loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentorgreader042viewer2022020523575068871a28ab0f07b0921ehtml5thumbnails1jpg width=140 height=200 adivp© 1991 Nature Publishing Grouppdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader042fdocumentorgreader042viewer2022020523575068871a28ab0f07b0921ehtml5page2jpg target=_blank img data-url=documenta-b-cell-deficient-mouse-by-targeted-disruption-of-the-membrane-exon-of-thehtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: A B cell-deficient mouse by targeted disruption of the membrane exon of the immunoglobulin μ chain gene loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentorgreader042viewer2022020523575068871a28ab0f07b0921ehtml5thumbnails2jpg width=140 height=200 adivp© 1991 Nature Publishing Grouppdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader042fdocumentorgreader042viewer2022020523575068871a28ab0f07b0921ehtml5page3jpg target=_blank img data-url=documenta-b-cell-deficient-mouse-by-targeted-disruption-of-the-membrane-exon-of-thehtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: A B cell-deficient mouse by targeted disruption of the membrane exon of the immunoglobulin μ chain gene loading=lazy...