id	keyword
ct-9899	sperm
ct-9899	semen
ct-9899	storage
ct-9899	motility
ct-9899	thaw
ct-9899	alpaca
ct-9899	castration
ct-9899	extender
ct-9899	cryopreservation
ct-9899	day
ct-9899	membrane
ct-9899	epididymides