News tagged with embryo development
Preimplantation genetic diagnosis may pose neurological risks
Jul 21, 2009 |
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Preimplantation genetic diagnosis (PGD) has helped many couples conceive healthy children and is generally considered a safe practice. However, a new long-term analysis of PGD in mice suggests that this procedure may increase ...
Female human embryos adjust the balance of X chromosomes before implantation
Jun 29, 2009 |
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Dutch researchers have found the first evidence that a process of inactivating the X chromosome during embryo development and implantation, which was known to occur in mice but unknown in humans, does, in fact, take place ...
How chromosomes meet in the dark -- Switch that turns on X chromosome matchmaking
Biology /
Dec 27, 2008 |
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A research group lead by scientists at the University of Warwick has discovered the trigger that pulls together X chromosomes in female cells at a crucial stage of embryo development. Their discovery could also provide new ...
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Study provides first clear idea of how rare bone disease progresses
Nov 12, 2009 |
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An international team of scientists, led by researchers at the University of Pennsylvania School of Medicine, is taking the first step in developing a treatment for a rare genetic disorder called fibrodysplasia ...
Scientists turn stem cells into precursors for sperm, eggs
Oct 28, 2009 |
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Human embryonic stem cells derived from excess IVF embryos may help scientists unlock the mysteries of infertility for other couples struggling to conceive, according to new research from the Stanford University School of ...
The skeleton: Size matters
Oct 27, 2009 |
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Vertebrates have in common a skeleton made of segments, the vertebrae. During development of the embryo, each segment is added in a time dependent manner, from the head-end to the tail-end: the first segments to be added ...
Researchers discover mechanism that prevents two species from reproducing
Oct 26, 2009 |
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Cornell researchers have discovered a genetic mechanism in fruit flies that prevents two closely related species from reproducing, a finding that offers clues to how species evolve.
Scientists grow mice heart muscle strip that beats
Oct 15, 2009 |
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(PhysOrg.com) -- Scientists have grown a piece of heart muscle - and then watched it beat - by using stem cells from a mouse embryo, a big step toward one day repairing damage from heart attacks.
New strategy for mending broken hearts?
Oct 11, 2009 |
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(PhysOrg.com) -- By mimicking the way embryonic stem cells develop into heart muscle in a lab, Duke University bioengineers believe they have taken an important first step toward growing a living "heart patch" ...
How does a worm build a throat? Tackling the 'organ formation puzzle'
Oct 06, 2009 |
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(PhysOrg.com) -- Mention worms to most people, and they probably think of fishing, gardening, or trips to the vet. Mention them to Susan E. Mango, and she begins telling you how “absolutely beautiful” they ...
New study pinpoints gene controlling number of brain cells (w/ Video)
Medicine & Health / Neuroscience
Oct 04, 2009 |
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In populating the growing brain, neural stem cells must strike a delicate balance between two key processes - proliferation, in which the cells multiply to provide plenty of starting materials - and differentiation, in which ...
Researchers working to develop, market embryonic test for bovine genetics
Sep 17, 2009 |
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(PhysOrg.com) -- Looking at the genetic makeup of cattle to determine their value is nothing new. An examination of a small sample of hair or blood can reveal if a calf has any genetic diseases that will lower ...
Secrets in a seed: Clues into the evolution of the first flowers
Sep 14, 2009 |
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Approximately 120-130 million years ago, one of the most significant events in the history of the Earth occurred: the first flowering plants, or angiosperms, arose. In the late 1800s, Darwin referred to their development ...
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