User talk:Yangguangzz

License tagging for File:Chemoenzymatic glycorandomization.png
Thanks for uploading File:Chemoenzymatic glycorandomization.png. You don't seem to have indicated the license status of the image. Wikipedia uses a set of image copyright tags to indicate this information; to add a tag to the image, select the appropriate tag from this list, click on this link, then click "Edit this page" and add the tag to the image's description. If there doesn't seem to be a suitable tag, the image is probably not appropriate for use on Wikipedia.

For help in choosing the correct tag, or for any other questions, leave a message on Media copyright questions. Thank you for your cooperation. --ImageTaggingBot (talk) 05:06, 13 April 2009 (UTC)