FN1 and thyroid tumor: We found that integrin α6 (Figure 4B-I, panel b), integrin β1 (panel c), and integrin β3 (panel d) were similarly elevated as FN in the thyroid tumors of HFD-ThrbPV/PVPten+/−mice (Figure 4B-I, lanes 4-6 versus lanes 1-3; quantitative data: Figure 4B-II-b, 4B-II-c, and 4B-II-d, bar 3 versus bar 1).