Blood stem cells found to not be in charge in an emergency

As long as we are healthy, our body keeps the number of blood and immune cells largely constant. However, any infection or other disorder that increases cell consumption results in cell loss, which must be replaced as quickly ...

Enzyme 'atlas' helps researchers decipher cellular pathways

One of the most important classes of human enzymes are protein kinases—signaling molecules that regulate nearly all cellular activities, including growth, cell division, and metabolism. Dysfunction in these cellular pathways ...

Sculpting the human body plan in a dish

Although Michelangelo's masterpiece "David" captured the magnificence of the human body—how exactly this exquisite body plan is established during human development has puzzled scientists for more than a century. This has ...

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