common fold, common function, common origin?
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© 1997 Nature Publishing Group http://www.nature.com/nsmb
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© 1997 Nature Publishing Group http://www.nature.com/nsmb
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© 1997 Nature Publishing Group http://www.nature.com/nsmb
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© 1997 Nature Publishing Group http://www.nature.com/nsmb
![Page 5: Common fold, common function, common origin?](https://reader035.vdocument.in/reader035/viewer/2022073020/575069171a28ab0f07b335bf/html5/thumbnails/5.jpg)
© 1997 Nature Publishing Group http://www.nature.com/nsmb