Figure 4.

Venn diagram analysis of the genes with detectable expression in neuroblastoma, neuroblast, and cortex samples. (a) All genes, (b) transcription factors (GO:0003700), and (c) neurogenesis genes (GO:0007399). The number of genes that are in common between neuroblast and neuroblastoma is higher than the number of genes that are in common between the neuroblasts and cortex samples (especially for the gene classes transcription and neurogenesis), indicating that neuroblastomas resemble neuroblasts. GO, Gene Ontology.