PLK1 and retinal degeneration: The ciliary localisation of MAPH-9 (microtubule-associated protein 9) is consistent with a known functional association between MAP9 and the centrosomal regulatory kinase PLK1 [72], the centrosomal localisation and suggested ciliary functions for MAP9 in zebrafish [69], and a role for MAP9 as a modifier of retinal degeneration in Dachshunds [70].