Monday, August 31, 2020

'Hero' St. Louis police officer dies after being shot in the head

'Hero' St. Louis police officer dies after being shot in the headA St. Louis police officer died Sunday after being shot in the head by a gunman, authorities said.




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Old muscle stem cells can act young again but there’s a catch

Scientists at UCLA discovered a surprising reason aging muscles heal more slowly. In older muscle stem cells, a protein called NDRG1 builds ...