Assertion: salivary gland's secretion | /r/HasProperty | a combination of three events
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Source sentences:
text: Secretion itself is a combination of three events: (i) nervous cholinergic stimulation initiates fluid filtration from blood plasma to the acinar lumen, (ii) exocytosis of cytoplasmic granuli-containing proteins into the acinar lumen, and (iii) mechanical contraction of the secretory end-pieces mediated by specialized myoepithelial cells.