GRIA4 and medulloblastoma: Similarly, a strong expression of GluR4 AMPA receptor subunit was detected in two cell lines: TE671 (rhabdomyosarcoma/medulloblastoma) and RPMI (plasmocytoma), and of GluR6 kainate receptor subunit in SK-NA-S (neuroblastoma) and MOGGCCM (astrocytoma) cell lines at levels comparable to those in the HB.