PARD3 and glioblastoma: We analyzed the functional role of Par3 in U3005MG/PN, U3028MG/CL, U3034MG/MS, and U3031MG/MS cultures in order to cover all three major GBM subtypes, and selected cells that expressed high Par3 levels (however, the single CL cell culture U3028MG/CL expressed rather low Par3 levels as explained above; Fig. 1c).