Developing cells do synchronized swimming inside the embryo

The very beginnings of life inside a tiny developing embryo are mesmerizing to watch. Each movement and biochemical reaction is executed with well-ordered precision about 95 percent of the time, leading to the development ...

Tracking genes' remote controls

As an embryo develops, different genes are turned on in different cells, to form muscles, neurons and other bodily parts. Inside each cell's nucleus, genetic sequences known as enhancers act like remote controls, switching ...

New battle lines drawn on stem cells

Faced with a new federal policy that opens the door for more embryonic stem cell research, conservatives have geared up for a political battle at the national and state level that goes to the core of their beliefs about the ...

Act of sabotage determines mammalian embryonic development

Alternative splicing is a fundamental biological process that allows cells to make many different types of mRNAs and proteins from a limited number of genes. For many animals, including humans, it is a feature that is essential ...

Scientists identify "naïve-like" human stem cell

Scientists from our university and Berlin have identified a type of human stem cell that appears to be "naïve-like" – able to develop into any type of cell. The discovery of this cell type could potentially have a large ...

From pluripotency to totipotency

While it is already possible to obtain in vitro pluripotent cells (ie, cells capable of generating all tissues of an embryo) from any cell type, researchers from Maria-Elena Torres-Padilla's team have pushed the limits of ...

For different species, different functions for embryonic microRNAs

(PhysOrg.com) -- When evolution has lucked into efficient solutions for life’s most fundamental problems, it adopts them as invaluable family heirlooms, passing them down as one species evolves into another. So it was reasonable ...

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