Keywords: Cobalamin.png Chemical structure of vitamin B12 Transferred from http //en wikipedia org en wikipedia<br/> Original text I created this work entirely by myself 2010-02-09 Ymwang42 talk Original uploader was Ymwang42 at http //en wikipedia org en wikipedia Released into the public domain by the author PMS 5555656556 jpg en wikipedia Ymwang42 original upload log page en wikipedia Cobalamin png 2010-02-09 06 58 Ymwang42 1652×2069× 48896 bytes <nowiki>aesthetic changes</nowiki> 2009-04-20 07 51 Ymwang42 702×1000× 33101 bytes ' 2009-04-20 07 27 Ymwang42 702×1004× 33153 bytes ' 2009-04-20 07 26 Ymwang42 702×1052× 33652 bytes ' 2009-04-20 07 22 Ymwang42 702×936× 30699 bytes <nowiki> I created this work entirely by myself ~~~ </nowiki> Vitamin B12 |