Using a custom script to process sim4 alignments of cDNA and genomic sequences, we find two to eight different splice forms for 85 (45%) of the 191 genes for which we have had some opportunity to observe alternate splicing (that is, a minimum of two cDNAs, at least one of which is spliced), and 55 (67%) of the 82 genes for which we have four or more cDNAs (and thus a higher chance of observing any alternate splicing) (Figure 5).