OLIG2 and spindle cell hemangioma: While taking the utmost care for osmotic control, we measured the densities, fluorescence intensities, and FS values (sizes) of total (7-AAD(+)), neuronal (NeuN(+)), and oligodendroglial (olig2(+)) cell nuclei, as well as other neural cell (NeuN(−)/olig2(−)) nuclei in the gray matter of FPCs and ITCs from patients with either SCH or BPD, and from normal controls.