Gene ontology enrichment analysis of differentially expressed genes. The first 4 GO terms with the highest level of statistical significance for three cell types are presented. Line graphs indicate the number of differentially expressed genes in specific GO terms, while bar graphs represent the level of statistical significance for enrichment. Complete lists of GO terms significantly enriched with FDR-adjusted p-value ⩽ 0.05 in three cell types are given in Data File 2.