has part has part has_part characteristic of part of has modifier abnormal vas deferens morphology abnormal ampullary gland morphology MP:0013323 any structural anomaly of the paired accessory, glandular, androgen-dependent outpouchings of the proximal ductus deferens, one on each side, that produce and secrete lipids and glycogen, components of the seminal fluid; they open into the ampullae at the level of the colliculus seminalis, are lined by simple columnar epithelium with large, oval nuclei, and may be distinguished from those of the prostate as they are surrounded by a characteristic, dense, fibromuscular stroma; the epithelium forms longitudinal folds and the glands contain homogeneous, dense, eosinophilic secretions with characteristic holes that impart a Swiss cheese-like appearance There is no known human counterpart to the ampullary glands of the mouse. abnormal male accessory sex gland morphology morphology abnormal ampullary gland