Posted On: 01/28/2016 9:45:44 AM
Post# of 72443
I am still kind of a toddler when it comes to the whole P53 thing, but the following video was helpful to me ( if you can make it to the end it explains the P21 significance)
https://m.youtube.com/watch?v=-3Di4OgAhmc
https://m.youtube.com/watch?v=-3Di4OgAhmc
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