sperm造句
61, Well, he explains, he once dissected a baby sperm whale brought aboard ship.
62, The Ligurian Sea, where the explosion occurred, is an important area for sperm whales.
63, The eggs were removed and injected with sperm, and the fertilized eggs were implanted in her uterus.
64, The sperm whales have been stranded in Scapa Flow for several weeks.
65, It is a well-documented fact that guys will not ask for directions. This is a biological thing. This is why it takes several million sperm cells... to locate a female egg, despite the fact that the egg is, relative to them, the size of Wisconsin.Dave Barry
66, Or Hecht could stay with the first and only method she has tried, having the doctor introduce sperm into her uterus.
67, The 56-year-old Northamptonshire woman received fertility treatment using donor eggs and her husband's sperm.
68, The female's sperm storage tubules are sausage-shaped and sperm lie at the bottom of the tube.
69, In person, however, they have matured about as much as a sperm in a deep frozen sperm bank.
70, Up to this point Ishmael has told us a good deal about the great sperm whale.
71, In most mammals sperm are viable in the female's reproductive tract for a matter of hours.
72, But where had his Glover genes come from if his father was in a sperm bank?
73, When its eggs are fertilized, sometimes more than one sperm penetrates the egg.
74, Just how the sperm triggers the explosive release of calcium in the egg is still something of a mystery.
75, Although that may seem like plenty, low sperm counts often are warnings of problems with sperm function.
76, Many of his sperm do not even try to fertilize her eggs but instead either attack other sperm or block their passage.
77, Since sperm only constitute a tiny proportion of the seminal fluid this is not even noticeable.
78, For the male it means a vasectomy - the cutting or tying of the male's sperm ducts.
79, The only thing Rob could think up as a possible Hank Camden failure was the likelihood of a low sperm count.
80, The touch of the sperm on the oocyte's outer membrane stimulates the second meiosis to move to completion.
81, The spermicide didn't stay hostile to sperm for more than a few hours.
82, Only one sperm fertilizes an egg, but it evidently requires the backup of many millions of others.
83, Strictly speaking, there is as yet no definitive evidence for declining sperm counts.
84, She was an automaton, carrying out the simple instructions of her neural program: If whit fly occupied, withhold sperm.
85, Even the propeller and engine are jettisoned when the sperm meets the egg; only the nucleus travels farther.
86, Men are still able to father children into their seventies, though their sperm count is lower than in their youth.
87, This basic asymmetry between the genders goes right back to the difference in size of a sperm and an egg.
88, For the vast majority of men, the reason for a low sperm count can not be explained.
89, The sperm whale dives to a mile and more and can stay under for two hours.
90, Males have evolved other kinds of counter-adaptations to prevent sperm competition.
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