WASHINGTON (Reuters) -New research has identified yet another way that spaceflight tampers with the human body. A study involving samples flown on four SpaceX resupply missions to the International ...

Every drop of blood in the human body traces back to a small reserve of stem cells buried inside bone marrow. These ...

Scientists have long been puzzled by how maturing red blood cells manage to produce all the hemoglobin they need to carry ...

Scientists have long been puzzled by how maturing red blood cells manage to produce all the hemoglobin they need to carry ...

University of Cambridge scientists have used human stem cells to create three-dimensional embryo-like structures that replicate certain aspects of very early human development - including the ...

Scientists have long been puzzled by how maturing red blood cells manage to produce all the hemoglobin they need to carry oxygen to tissues, even ...

The team observed the emergence of the three-dimensional embryo-like structures under a microscope in the lab. These started producing blood (seen here in red) after around two weeks of development - ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

Red blood cells normally cannot move on their own; they lack any of the cell structures needed for movement. Instead, they deliver oxygen throughout the body by going with the flow of blood. So, when ...