Embryo
hideAn embryo (irregularly from Greek: ἔμβρυον, plural ἔμβρυα, lit. "that which grows," from en- "in" + bryein "to swell, be full"; the proper Latinate form would be embryum) is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division until birth, hatching, or germination. In humans, it is called an embryo until about eight weeks after fertilization (i.e. ten weeks LMP), and from then it is instead called a fetus.
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News tagged with embryos
Brooding fishes take up nutrients from their own children
Dec 08, 2009 |
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In the pipefish, the male cares for the offspring. Apart from the ones he sucks the life out of. The discovery of filial cannibalism in the pipefish is now creating a stir in the research world.
When is a stem cell really a stem cell?
Nov 24, 2009 |
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(PhysOrg.com) -- Induced pluripotent stem (iPS) cells -- adult cells reprogrammed to look and function like versatile embryonic stem cells -- are of growing interest in medicine. They may provide a way to ...
Canadian scientist aims to turn chickens into dinosaurs
Other Sciences / Archaeology & Fossils
Aug 25, 2009 |
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After years spent hunting for the buried remains of prehistoric animals, a Canadian paleontologist now plans to manipulate chicken embryos to show he can create a dinosaur.
Frog embryos associate the smell of predators with danger
Nov 03, 2009 |
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(PhysOrg.com) -- A new study in the US and Canada has found that frogs can learn to associate the smell of predators with danger, even as embryos.
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.
Stem cell surprise for tissue regeneration (w/ Podcast)
Jun 25, 2009 |
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Scientists working at the Carnegie Institution's Department of Embryology, with colleagues, have overturned previous research that identified critical genes for making muscle stem cells. It turns out that ...
World first: Japanese scientists create transgenic monkeys
May 27, 2009 |
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In a controversial achievement, Japanese scientists announced on Wednesday they had created the world's first transgenic primates, breeding monkeys with a gene that made the animals' skin glow a fluorescent ...
Measure to change U. of Neb. stem-cell rule fails (Update 2)
Nov 21, 2009 |
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(AP) -- The University of Nebraska's governing board on Friday voted not to place tighter restrictions on embryonic stem cell research than those outlined under federal guidelines, which were expanded after ...
Unlocking the key to human fertility
Aug 03, 2009 |
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Scientists at Leeds and Bradford have discovered a unique 'DNA signature' in human sperm, which may act as a key that unlocks an egg's fertility and triggers new life.
Obama to reverse Bush limits on stem-cell research
Mar 06, 2009 |
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US President Barack Obama will on Monday sign an executive order reversing Bush administration restrictions on federal funding for stem-cell research, a senior administration official said.
Tiny injector to speed development of new, safer, cheaper drugs
Chemistry / Analytical Chemistry
Nov 04, 2009 |
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It's no bigger than a stamp packet but it has the potential to allow rapid development of a new generation of drugs and genetic engineering organisms, and to better control in-vitro fertilization.
Stem cells' 'suspended' state preserved by key step, scientists report
Jul 08, 2009 |
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Scientists have identified a gene that is essential for embryonic stem cells to maintain their all-purpose, pluripotent state. Exploiting the finding may lead to a greater understanding of how cells acquire their specialized ...
At Long Last, How Plants Make Eggs
Jun 04, 2009 |
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(PhysOrg.com) -- A long-standing mystery surrounding a fundamental process in plant biology has been solved by a team of scientists at the University of California, Davis.
Embryonic stem cell therapy closer to human trials
Nov 19, 2009 |
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Embryonic stem cell therapy got a step closer to the clinic Thursday after US researchers said they filed a request for government approval of human trials.
Embryo's heartbeat drives blood stem cell formation
May 13, 2009 |
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(PhysOrg.com) -- Biologists have long wondered why the embryonic heart begins beating so early, before the tissues actually need to be infused with blood. Two groups of researchers from Children's Hospital ...
