sperm
Promiscuous Mice Have Extra-Fast Sperm
Promiscuous Mice Have Extra-Fast Sperm
Jef Akst | Oct 19, 2016
The tails of polygamous deer mice sperm have longer midsections than the sperm tails of monogamous individuals of a similar species, and this correlates with improved swimming and competitive ability.
Study: Mitotic Cells Can Reprogram Mouse Sperm
Study: Mitotic Cells Can Reprogram Mouse Sperm
Ashley P. Taylor | Sep 13, 2016
Murine embryos undergoing first cell division can reprogram injected sperm and develop normally. 
Scientists Solve Giant Sperm Paradox
Scientists Solve Giant Sperm Paradox
Tanya Lewis | May 26, 2016
A study reveals why some male fruit flies produce sex cells that are 20 times the length of their bodies.
Skin Cells Turned Into Immature Sperm
Skin Cells Turned Into Immature Sperm
Tanya Lewis | Apr 29, 2016
The reprogrammed germ-like cells were unable to fertilize eggs, however. 
Next Generation: Sperm-Catching Beads
Next Generation: Sperm-Catching Beads
Anna Azvolinsky | Apr 27, 2016
Sperm-binding, peptide–coated beads work as an implantable contraception device in mice and as a means of selecting human sperm for assisted reproduction techniques, researchers show. 
Week in Review: February 22–26
Week in Review: February 22–26
Jef Akst | Feb 26, 2016
Questions about how E. coli evolves; spermatids in a dish; fighting bacteria with virus-like molecule; what drives metastasis; antibodies fight Ebola in monkeys
Toward Making Sperm in the Lab
Toward Making Sperm in the Lab
Rina Shaikh-Lesko | Feb 25, 2016
Researchers devise a technique for creating gametes from murine embryonic stem cells.
Surrogate Genes Enable Reproduction
Surrogate Genes Enable Reproduction
Jyoti Madhusoodanan | Jan 28, 2016
Increasing the expression of two genes from non-Y chromosomes restores spermatogenesis in male mice that lack Y chromosomes.
Week in Review: November 30–December 4
Week in Review: November 30–December 4
Jef Akst | Dec 4, 2015
Historic meeting on human gene editing; signs of obesity found in sperm epigenome; top 10 innovations of 2015; dealing with retractions
Obesity Alters Sperm Epigenome
Obesity Alters Sperm Epigenome
Karen Zusi | Dec 3, 2015
Moderately obese men display different epigenetic marks on their sperm than lean men, and bariatric surgery in massively obese men correlated with changes in sperm methylation.