CD83 and glioma: Exploiting the GFP-labeling of IUE-based glioma cells, we employed multispectral imaging flow cytometry and identified a population of CD83+GFP+ ALTs that were characterized by high, diffuse intracellular GFP expression, a hallmark of targeted cells in the pB-IUE model (Fig. 1H; Supplementary Fig. S3A–S3C; ref. 24).