Carrying identical twins always brings special feelings and wonder, but our bodies sometimes hide very strange medical secrets. In extremely rare cases, a baby can develop malignant tumours while still in the womb. Such tragedies have puzzled doctors: does each baby develop the disease on its own, or can it cross from one twin to […]
Read moreBefore the theory of evolution, ageing was seen like a machine whose parts wear out over time. Afterwards, scientists began to ask why evolution had produced highly complex, adaptable living things that are very good at surviving from birth to adulthood, but then fall into decline and death. Their search for answers led to several […]
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About red blood cells A red blood cell is a disc-shaped cell with no nucleus, made mainly of haemoglobin. It lives 100 to 120 days, and when it dies it is cleared away in the liver and spleen. It is about 60% water and 40% haemoglobin and other organic, mineral and protein substances. Haemoglobin carries […]
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