has part has part has_part characteristic of has modifier abnormal efferent ductules of testis morphology dilated efferent ductule of testis MPheno.ontology dilated efferent ducts efferent ductules of testis dilation dilated efferent ductules of testis dilated vas efferens efferent ductule of testis dilation MP:0009140 vas efferens dilation an expansion in the volume or area of the lumen of one or more of the small seminal ducts that lead from the testis to the head of the epididymis, usually with an increase in contained fluid dilated ductuli efferentes testis abnormal dilated efferent duct