Similar localized signal was also detected by immunostaining with an antibody raised against purified mammalian laminin protein from the basement membrane of mouse Englebreth Holm-Swarn sarcoma, though there was higher background signal, consistent with our Western blotting analysis that showed that its lower specificity than Cs-lamα3/4/5 antibody (Figure S1). Here, LAMA3 is linked to sarcoma.