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121, It is these cells which will later give rise, by further cell division, to eggs or sperm.

122, In practice, fertilisation requires tight coordination between the sperm and the oocyte.

123, One of each of the 23 pairs has gone to one of the resulting sperm or ova and one to the other.

124, The difference in size between egg and sperm is counterbalanced by the numbers in which they are produced.

125, And because sperm now can be extracted after death, doctors must address the ethical questions raised by the lack of permission.

126, The sperm whale at Tranque, Ishmael says, was about right for a large-sized whale of this type.

127, A male is defined as the gender that produces sperm or pollen: small, mobile, multitudinous gametes.

128, Another method of birth control must be used for a few months until two consecutive tests show there are no sperm left.

129, Sperm, on the other hand, was life and the early Church laid down penances for those who wasted it.

130, When the creature matures, the parasitic sperm cells eat out its gonads and replace them with themselves.

131, Rarely seen, giant squid are prey to sperm whales.

132, The sperm teratogenicity test was negative.

133, The motivation of sperm donors varies.

134, My husband had a very low sperm count.

135, At the center is a minute opening, called a micropyle, through which the sperm enters the egg.

136, In a sperm cell, a specialized set of tiny support proteins (protamines) pack the DNA down to about one-sixth the volume of a mitotic chromosome.

137, The scientists conducted photo surveys and performed skin biopsies on blue, fin and sperm whales from the Gulf of California.

138, Methods: Radioimmunoassay (RIA) and Wright Giemsa stain were used to detect serum sexual hormone and sperm cytology in 45 aspermia patients.

139, Conclusion: Seminal carnitine concentration may be an appropriate marker of sperm and epididymal function.

140, Numerous sperm trying to to fertilise a human egg. They are trying to find their way through the zona pellucida,[http://sentencedict.com/sperm.html] the membrane that surrounds and protects the egg.

141, Recent progresses of study on sperm ultrastructure of Bivalve, Gasteropod and Cephalopoda were introduced.

142, Mouse spermatogonium chromosomal aberration test and sperm malformation test were used to assess reproductive toxicity.

143, The vitamin E, there is function of regulate the sex gland function and the extension sperm life span.

144, In IVF, a sperm and an egg are joined together outside a woman's body.

145, The study, published in the journal Human Reproduction, found 41 million fewer sperm per millilitre of semen after just one portion every two days.

146, The bulls producing donor sperm are screened first for disease and bloodlines.

147, They found that about 20% of the cells produced early-stage sperm cells or spermatagonia and, after further culture, they could see a number of cells continue to split and divide.

148, In most cases, donor sperm is obtained from a sperm bank.

149, These genes come from the ffromher's sperm and then the mother's egg; which are produced by the minge and feminge reproductive systems.

150, A tablespoon of human semen contains enough sperm to fertilize every woman in North America.