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Latest Gastrulation Stories

2014-07-01 10:58:24

The Rockefeller University About seven days after conception, something remarkable occurs in the clump of cells that will eventually become a new human being. They start to specialize. They take on characteristics that begin to hint at their ultimate fate as part of the skin, brain, muscle or any of the roughly 200 cell types that exist in people, and they start to form distinct layers. Although scientists have studied this process in animals, and have tried to coax human embryonic...

2013-05-17 13:31:12

An international team of scientists using a new X-ray method recorded the internal structure and cell movement inside a living frog embryo in greater detail than ever before. This result showcases a new method to advance biological research and the search for new treatments for genetic diseases. Scientists at Northwestern University and the Karlsruher Institut für Technologie in Germany, in collaboration with the Advanced Photon Source at the U.S. Department of...

X-ray Tomography On An Embryo Of A Living Frog
2013-05-16 14:51:20

Karlsruhe Institute of Technology Classical X-ray radiographs provide information about internal, absorptive structures of organisms such as bones. Alternatively, X-rays can also image soft tissues throughout early embryonic development of vertebrates. Related to this, a new X-ray method was presented recently in a Nature article published by a German-American-Russian research team led by KIT. For periods of about two hours, time-lapse sequences of cellular resolution were obtained of...

Embryonic Development Driven By Junk DNA
2012-12-03 10:51:28

Sanford-Burnham Medical Research Institute An embryo is an amazing thing. From just one initial cell, an entire living, breathing body emerges, full of working cells and organs. It comes as no surprise that embryonic development is a very carefully orchestrated process–everything has to fall into the right place at the right time. Developmental and cell biologists study this very thing, unraveling the molecular cues that determine how we become human. “One of the first, and...

2012-03-07 11:04:51

Scientists have found that the gut endoderm has a significant role in propagating the information that determines whether organs develop in the stereotypical left-right pattern. Their findings are published 6 March 2012 in the online, open-access journal PLoS Biology. Superficially, we appear bilaterally symmetrical. Nonetheless, the stereotypical placement of our organs reveals a stereotypical internal asymmetry. For example, the heart is located on the left, while the liver is located on...

2011-06-03 13:11:59

Caltech researchers discover a genomic control system that regulates gut formation in sea-urchin embryos For all animals, development begins with the embryo. It is here that uniform cells divide and diversify, and blueprints are laid for future structures, like skeletal and digestive systems. Although biologists have known for some time that signaling processes"”messages that tell a cell to express certain genes so as to become certain parts of these structures"”exist at this...

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2011-03-24 13:26:32

Avian embryos could join the list of model organisms used to study a specific type of cell migration called epiboly, thanks to the results of a study published this month in the journal Developmental Dynamics. The new study provides insights into the mechanisms of epiboly, a developmental process involving mass movement of cells as a sheet, which is linked with medical conditions that include wound healing and cancer. The study, published online on March 15, explains how epithelial cells...

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2010-05-31 07:32:46

Researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC), Berkeley, have successfully attached imaging probes to glycans "“ the sugar molecules that are abundant on the surfaces of living cells "“ in the embryos of zebrafish less than seven hours after fertilization. Glycans are key regulators of the processes that guide cell development, and zebrafish are a top vertebrate model organism of...

2008-11-05 12:00:10

Clusters of mouse embryonic stem cells called embryoid bodies more closely approximate true embryos in organization and structure than previously thought, according to researchers at the Stanford University School of Medicine. Harnessing the signals that influence the cells' fate may help researchers more accurately direct the differentiation of embryonic stem cells for use in therapy. The researchers found that embryoid bodies have hallmarks of gastrulation -- a remarkable developmental...


Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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