MAP1LC3B and glioblastoma: LN18 glioblastoma cells transduced by adenovirus expressing GFP-tagged NOP53 (Ad-NOP53) or control GFP (Ad-GFP) were starved in Earle’s Balanced Salt Solution (EBSS) medium or treated with rapamycin, and the number of MAP1LC3B (LC3B)-positive cells were counted as an indicator of autophagosomes.