cell morphology variant nervous system morphology variant accessory cell morphology variant WBPhenotype:0000969 Animals exhibit variations in the structure, organization or placement of the cells that support sensory neurons, compared to that observed in control animals. In C. elegans, this category collectively refers to socket cells, sheath cells, and structural cells, or their processes. C_elegans_phenotype_ontology WBbt:0005762. accessory cell morphology abnormal