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The artificially motorized cells may one day help fight cancers in the female reproductive tract.

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The switch from maternal factors involves dynamic reprogramming of the zygotic genome.

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New technologies reveal the dynamic changes in mouse and human embryos during the first week after fertilization.

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image: Three-Parent IVF Advances

Three-Parent IVF Advances

By Anna Azvolinsky | November 30, 2016

Differences in the replicative advantages conferred by some mitochondrial DNA haplotypes have implications for mitochondrial replacement therapy, researchers report. 

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image: Ocean Acidification Affects Fish Spawning

Ocean Acidification Affects Fish Spawning

By Alison F. Takemura | July 26, 2016

Researchers report the first evidence that acidified waters alter the ocellated wrasse’s reproductive behavior in the wild.

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image: Inhibiting Sperm Protein Causes Infertility

Inhibiting Sperm Protein Causes Infertility

By Karen Zusi | October 5, 2015

Two drugs targeting a protein in sperm cause reversible infertility in male mice, providing new hope for a male contraceptive.

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image: Semen Says

Semen Says

By Rina Shaikh-Lesko | July 1, 2014

Scientists report for the first time that a snail’s seminal fluid proteins can suppress the mating success of the male side of its hermaphroditic partner.

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image: Spiders Try to Ensure Paternity

Spiders Try to Ensure Paternity

By Bob Grant | June 11, 2014

Male dwarf spiders deploy sperm-blocking plugs to thwart the reproductive chances of their mate’s subsequent suitors.

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image: Female Pigs May Sense Sex of Sperm

Female Pigs May Sense Sex of Sperm

By Anna Azvolinsky | May 21, 2014

The oviducts of pigs exhibit different gene expression profiles depending on their exposure to sperm with either an X or a Y chromosome, a study shows. 

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image: Coming to Terms

Coming to Terms

By Anna Ajduk and Magdalena Zernicka-Goetz | November 1, 2012

New noninvasive methods of selecting the most viable embryo could revolutionize in vitro fertilization.

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