To understand the effect of targeted deletion of XBP1 on KPC tumor-induced muscle atrophy, we next generated transverse sections of TA (fast/glycolytic) and soleus (slow/oxidative) muscle, performed anti-laminin and DAPI staining or H&E staining, followed by morphometric analysis (Fig. 2G–N and Fig. S2C–E). Here, XBP1 is linked to neoplasm.