Gallery 1_GBM-tissue-GFAPalpha-green-GFAPdelta-red-Hoechst-blue Image 1 of 24 Glial Fibrially Acidic Protein (GFAP) isoforms in Glioblastoma Multiforme (GBM) tumor tissue section. Immunostained for GFAPalpha (Green) and delta (red), counterstained with Hoechst (DAPI, blue)