 In the case of the gene bli-4 there are 6 known CDS isoforms, called K04F10.4a, K04F10.4b, K04F10.4c, K04F10.4d, K04F10.4e and K04F10.4f.It is common to refer to isoforms in the literature using the CGC gene family name with a letter appended, for example pha-4a, however this has no meaning within the WormBase database and searches for pha-4a in WormBase will not return anything.The correct name of this isoform is either the CDS/Transcript name