HTT and Huntington disease: EAK102andEAK103:C. elegansmodels for Huntington's disease, in which versions of a fragment of the human Huntingtin protein tagged with YFP is expressed in the body wall muscles (Lee et al., 2017; Ung et al., 2020).EAK102expresses the Huntingtin protein with the normal number of glutamine repeats (Q15), andEAK103expresses the mutant Huntingtin protein with the aggregation-inducing number of glutamine repeats (Q128).