A Powder Regrows Fingers, Now Thigh Muscle for Marine...

A substance extracted from pigs has allowed Marine Corporal Isaias Hernandez to regain much of the muscle he lost to a mortar explosion while serving in Afghanistan.

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FDA approves new orphan drug...

FDA approves new orphan drug to treat pulmonary arterial hypertension.




On December 21, the U.S. Food and Drug Administration approved Uptravi (selexipag) tablets to treat adults with pulmonary arterial hypertension (PAH), a chronic, progressive, and debilitating rare lung disease that can lead to death or the need for transplantation.

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Intracellular calcium integrates complex signaling to control stem cell activity...

A cross section through a fly intestine depicting intestinal stem cells in green and enterocytes, functional gut cells, in red with large blue nuclei. Left: Under normal conditions, stem cells are distributed throughout the basal side of the epithelium and can be activated to regenerate enterocytes. Upon constitutive elevation of cytosolic Ca2+, intestinal stem cells become rapidly activated and can regenerate enterocytes. Right: Shown here is a condition in which Ca2+ was strongly and chronically elevated, resulting in excessive stem cell proliferation and causing tumors. Credit: Akos Gerencser, PhD, Buck Institute

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