User talk:Yashub

October 2014
Hello, I'm Materialscientist. I wanted to let you know that I undid one or more of your recent contributions to Rh blood group system because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Materialscientist (talk) 08:40, 27 October 2014 (UTC)