User talk:Betagalactosidase

Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content please cite a reliable source for the content of your edit. This helps maintain our policy of verifiability. Take a look at Citing sources for information about how to cite sources and the welcome page to learn more about contributing to this encyclopedia. Thank you. —  Jeff G. ツ  02:26, 9 December 2010 (UTC)