Quote Originally Posted by scbubba View Post
It's your user id in the forum. Each of us sees a different number from everyone else when we log in. For example, mine is 3860, so that shows up on my door (screenshot attached). Hope that helps.

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Come on scbubba, it is keratin 18 not 13! http://www.ncbi.nlm.nih.gov/gene/?term=3860 You messed it up!