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  • IVF procedures
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Your search has returned 56 articles:
  • News

    Teens born from assisted pregnancies may have higher blood pressure

    Assisted pregnancies give infertile couples the chance at a child. But kids conceived with reproductive technologies, such as in vitro fertilization, or IVF, were more likely to develop high blood pressure as adolescents than their naturally conceived counterparts, a new study finds.  

    Of 52 teens conceived with technological help, eight had hypertension, defined as blood pressure...

    09/05/2018 - 06:00 Health, Development, Epigenetics
  • Mystery Solved

    How salamanders can regrow nearly complete tails but lizards can’t

    Salamanders and lizards can both regrow their tails, but not to equal perfection.

    While a regenerated salamander tail closely mimics the original, bone and all, a lizard’s replacement is filled with cartilage and lacks nerve cells. That contrast is due to differences between stem cells in the animals’ spinal cords, researchers report online August 13 in Proceedings of the National...

    08/17/2018 - 12:30 Cells, Development, Animals, Evolution
  • News in Brief

    Here’s how fast cell death can strike

    Scientists now know how long it takes for a cell to tell itself it’s time to die.

    Signals triggering a type of cell suicide called apoptosis move through a cell like a wave, traveling at a rate of 30 micrometers per minute, Stanford University systems biologists Xianrui Cheng and James Ferrell Jr. report in the Aug. 10 Science.

    These findings resolve a debate over whether these...

    08/09/2018 - 15:17 Cells, Development
  • News

    Zika may harm nearly 1 in 7 babies exposed to the virus in the womb

    Babies exposed to a Zika infection while in the womb are not out of the woods even if they look healthy at birth.

    Nearly 1 in 10 of 1,450 babies examined developed neurological or developmental problems, such as seizures, hearing loss, impaired vision or difficulty crawling, a study from the U.S. Centers for Disease Control and Prevention finds. It’s the first tally of the health of...

    08/07/2018 - 17:27 Health, Development
  • News

    This ‘junk’ gene may be important in embryo development

    A once-maligned genetic parasite may actually be essential for survival.

    Mouse embryos need that genetic freeloader — a type of jumping gene, or transposon, called LINE-1 — to continue developing past the two-cell stage, researchers report in the July 7 Cell.

    Many scientists “charge that these are nasty, selfish genetic elements” that jump around the genome, making mutations and...

    07/03/2018 - 07:00 Development, Cells, Genetics
  • News

    There’s a genetic explanation for why warmer nests turn turtles female

    Toastier nest temperatures, rather than sex chromosomes, turn baby turtles female. Now, a genetic explanation for how temperature determines turtles’ sex is emerging: Scientists have identified a temperature-responsive gene that sets turtle embryos on a path to being either male or female. When researchers dialed down that gene early in development, turtle embryos incubating at the cooler...

    05/10/2018 - 14:00 Development, Genetics
  • News

    A key virus fighter is implicated in pregnancy woes

    An immune system mainstay in the fight against viruses may harm rather than help a pregnancy. In Zika-infected mice, this betrayal appears to contribute to fetal abnormalities  linked to the virus, researchers report online January 5 in Science Immunology. And it could explain pregnancy complications that arise from infections with other pathogens and from autoimmune disorders.

    In...

    01/05/2018 - 15:41 Development, Immune Science
  • News in Brief

    How dad’s stress changes his sperm

    Sperm from stressed-out dads can carry that stress from one generation to another. “But one question that really hasn’t been addressed is, ‘How do dad’s experiences actually change his germ cell?’” Jennifer Chan, a neuroendocrinologist at the University of Pennsylvania, said November 13 in Washington, D.C., at the annual meeting of the Society for Neuroscience.

    Now, from a study in mice...

    11/15/2017 - 15:30 Health, Development
  • News

    These spiders may have the world’s fastest body clocks

    WASHINGTON, D.C. — If it takes you a while to recover from a few lost hours of sleep, be grateful you aren’t an orb weaver. 

    Three orb-weaving spiders — Allocyclosa bifurca, Cyclosa turbinata and Gasteracantha cancriformis — may have the shortest natural circadian rhythms discovered in an animal thus far, researchers reported November 12 at the Society for Neuroscience’s annual meeting...

    11/14/2017 - 16:00 Animals, Evolution, Development
  • News

    In a first, human embryos edited to explore gene function

    For the first time, researchers have disabled a gene in human embryos to learn about its function.

    Using molecular scissors called CRISPR/Cas9, researchers made crippling cuts in the OCT4 gene, Kathy Niakan and colleagues report September 20 in Nature. The edits revealed a surprising role for the gene in the development of the placenta.

    Researchers commonly delete and disable genes...

    09/20/2017 - 13:24 Genetics, Development, Science & Society