(A, B) Analysis of gene classes associated with the homeodomain TF clusters. For each gene in the dataset, normalized, scaled expression in single cells was modelled as a function of homeodomain TF cluster identity, and significance of the association was determined using an F-test. Panel (A) depicts the number of genes with significant homeodomain TF cluster association falling into distinct gene classes. p-values were retrieved by a Fisher test. Panel (B) contrasts the p-values for homeodomain TF cluster association between Ig domain genes and other genes using a boxplot. See Methods, section Data visualization for a definition of boxplot elements. P values are from a two-sided Wilcoxon test. ***: p<0.005. 