User talk:68.212.51.161

Welcome to Wikibooks. We invite everyone to contribute constructively to our collection. Take a look at the welcome page if you would like to learn more about contributing. However, unconstructive edits, such as those you made to Cell Biology/History‎, are considered vandalism. If you continue in this manner you may be blocked from editing without further warning. Please stop, and consider improving rather than damaging the hard work of others. Thanks.  – Mike.lifeguard  | talk 21:38, 4 September 2007 (UTC)