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During the passage of sperm through the oviduct, spermatozoa bind to the oviductal epithelium and form the oviductal reservoir. This interaction keeps the fertilizing capacity of sperm until ovulation‐associated signals induce sperm release from the oviductal epithelium, allowing the transit of spermatozoa to the fertilization site. Fibronectin is a glycoprotein from the extracellular matrix that...