RCN1 and glioblastoma: Similarly, the primary glioblastoma cell line #41 (high RCN1 expressing cell) displayed significantly greater cell survival compared to the 4 low RCN1 expressing glioblastoma cell lines (#4, #20, #28 and #35) after treatment with tunicamycin (Figure 3E) and thapsigargin (Figure 3F).