Transcripts affected by calcium-mediated changes in exon abundance show enrichment for cellular component and functional gene classes. Gene Ontology categories over-represented within the exon dataset at each potassium chloride (KCl) time point are shown. Genes encoding calcium ion binding proteins and those proteins found at the plasma membrane or as a part of the extracellular matrix are affected throughout the time course of KCl depolarization. In contrast, other classes of genes are represented at either early or late time points. Descriptions of similar gene classes are listed. The number of transcripts affected by predicted changes in exon abundance, along with associated P values for each gene class, are listed by time point in Additional data file 8.