has part has part has_part characteristic of part of has modifier abnormal vas deferens morphology MP:0002769 vas deferens dysplasia abnormal ductus deferens morphology any structural anomaly of the secretory duct of the testicle that carries spermatozoa, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates to form ejaculatory duct MPheno.ontology abnormal internal male genitalia morphology morphology abnormal vas deferens