Supplementary Figures 1-5 from Intrinsic Cooperation between p16&lt;sup&gt;INK4a&lt;/sup&gt; and p21&lt;sup&gt;Waf1/Cip1&lt;/sup&gt; in the Onset of Cellular Senescence and Tumor Suppression &lt;i&gt;In vivo&lt;/i&gt;