has part has part has_part characteristic of has modifier abnormal seminal vesicle morphology abnormal seminal vesicle fluid composition MP:0013903 any alteration in the expected chemical makeup or appearance of the whitish yellow alkaline fluid secreted by the seminal vesicles that constitutes 60-70 percent of the ejaculate in humans; the secretory product of the columnar epithelial cell, which may be seen in the lumen of seminal vesicles, is strongly acidophilic; it contains large amounts of fructose (used by spermatozoa as an energy source for motility) in addition to water, K+ ions, phosphorylcholine, prostaglandins, flavins, citrate, ascorbic acid, and several amino acids and enzymes; seminal vesicle fluid is responsible for coagulation of the ejaculate, can alter sperm motility and capacitation, and acts as an immunosuppressant in the female reproductive tract composition abnormal seminal vesicle fluid