Navigation Links
Sperm cells


The term sperm is derived from the Greek word (σπέρμα) sperma and refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the...
Full article >>>

A sperm, from the ancient Greek word σπέρμα (seed) and ζῷον (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. It joins an ovum to form a zygote. A zygote is a single cell, with a complete set of chromosomes, that...
Full article >>>

Because sperm cells are haploid, they contribute half of the genetic information ... Sperm cells were first observed by a student of Anton van Leeuwenhoek in 1677. ...
Full article >>>

Find articles about Teens & Preteens and hundreds of other health-related topics at LIVESTRONG.COM, the definitive daily health, fitness, and lifestyle destination...
Full article >>>

Sperm cell The male gamete . The typical sperm of most animals has a head containing the nucleus and acrosome, a middle piece with the mitochondria,
Full article >>>

... usually consisting of a round or cylindrical nucleated cell, a short ... Sperm cells contribute half of the genetic information to the diploid offspring. ...
Full article >>>

However, sperm cells make up only about 3% of the volume of semen, a fluid ... Mature sperm cells are about 0.05 millimetres long, and are made up of a head, ...
Full article >>>

The sex cells, sperm and ova, are produced by meiosis in special tissues of male ... The number of sperm cells produced can be significantly diminished by ...
Full article >>>

Adult stem cells extracted from human bone marrow have been coaxed into becoming male reproductive cells. ... understand more about how sperm cells are created. ...
Full article >>>

As Moreno points out, coaxing stem cells into sperm may be the first step, but ... Men obviously produce millions of sperm cells which contain only the x ...
Full article >>>

RTÉ news brings you the latest Irish news, world news, international news and up to the minute reports on breaking Irish news stories and news from around the ...
Full article >>>

VIDEO: Watch sperm splash in the right direction in research that could lead to ... This gave the sperm cells two options as they're carried through the main ...
Full article >>>

A Sperm Cell or Spermatozoa. Sexual FAQs - Sperm Cell or Spermatozoa The mature sperm cell (spermatozoa) is... cells have 46 chromosomes but sperm have ...
Full article >>>

Some sperm cells are 'better' swimmers than others. Why? ... All normal cells have 46 chromosomes but sperm have half that number or, 23. If ...
Full article >>>

... from Newcastle University describes the generation of sperm cells from embryonic stem cells. ... Creation of sperm from frozen non-sperm cells offers some far ...
Full article >>>

Sperm are the male gamete produced from the germ cell line. The germ cells of the male are called spermatogonia, which oddly means sperm-eggs. ...
Full article >>>

Science and technology news stories tagged with keyword: sperm cells. ... Scientists discover how 'companion' cells to sperm protect them from genetic damage ...
Full article >>>

Scientists know that stem cells from embryos have the potential to develop into ... Most male infertility, Geijsen says, is due to not having enough sperm cells. ...
Full article >>>

... or can develop into more specialized cells -- eventually sperm in this case. ... clearly shown in fruit flies that lost sperm-making stem cells can be replaced, ...
Full article >>>


'"/>


See more about: Sperm cells

TAG: Sperm cells
(Date:11/23/2009)...RE, Calif. - By producing some of the highest reso...faces, scientists have a deeper understanding how ...research may lead to a new treatment for kidney st...ppears in the Nov. 23 online edition of the journa... , explores how peptides interact with mineral sur...
(Date:11/23/2009)...MINGHAM, Ala. A new study by University of Alabam...mass index (BMI) and co-existing medical condition...ival observed among African-Americans compared to ...s published online Nov. 23 in Cancer , a journal ...dicates that although BMI and co-morbidity are ind...
(Date:11/23/2009)...GN, Ill. Two new studies reveal in unprecedented ...ules to assemble new proteins and guide them towar...es used molecular dynamics flexible fitting (MDFF)...wo prominent molecular partners. , The first st...iences , concerns the intimate signaling between t...
Breaking Biology News(10 mins):Scientists watch as peptides control crystal growth with 'switches, throttles and brakes' 2Scientists watch as peptides control crystal growth with 'switches, throttles and brakes' 3Racial disparity in colon cancer survival not easily explained, UAB researchers say 2Computational microscope peers into the working ribosome 2Computational microscope peers into the working ribosome 3Kensey Nash Announces Agreement to Acquire Rights to OsseoFit Product 13449 1Kensey Nash Announces Agreement to Acquire Rights to OsseoFit Product 13449 2Kensey Nash Announces Agreement to Acquire Rights to OsseoFit Product 13449 3Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 1Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 2Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 3Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 4Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 5Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 6Catalyst Pharmaceutical Partners Reports Second Quarter 2009 Financial Results 13447 7Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 1Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 2Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 3Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 4Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 5Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 6Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 7Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 8Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 9Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 10Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 11Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 12Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 13Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 14Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 15Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 16Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 17Warner Chilcott Reports Operating Results for the Quarter Ended June 30 2009 and Updates 2009 Full Year Guidance 53933 18
...veal where a brain cell came from remain distinct ...rnational coalition of scientists will report in t...ding adds a new layer of complexity to the quest t..., according to senior author David H. Gutmann, M.D...f Neurology at Washington University School of Med...
...he risk of HIV transmission may be highest in the ...ublished in the April 1 issue of The Journal of In...ection accounted for nearly half of all transmissi...e province of Quebec, Canada. , Bluma Brenner, PhD...e in Montreal, and colleagues from several hospita...
...e noise, says a team of Rutgers-Camden professors ...he benefits of noise. Their findings could lead to...awei Hong, an assistant professor of computer scie...lliam Saidel, an associate professor of biology, a...fits of noise through mathematics. Although the Ru...
Other Biology News:Genetic fingerprints identify brain tumors' origins 2Risk of HIV transmission highest early in infection 2Noise echoes in cell communications 2
Other biology dictionary