NAGLU and astrocytoma (excluding glioblastoma): The present investigators also present data and references for five additional cell lines (the human neuroblastoma SH-SY5Y, human astrocytoma U373, human glioblastoma-astrocytoma U87MG, and two lines representing the murine cellular model of mucopolysaccharidosis, type IIIB: the WT (the control), and Naglu−/− line (the line with mutation in gene encoding N-alpha-acetylglucosaminidase), since there are data from the scientific literature addressing this topic of interest.