Developmental Cell. The scientists used genetically engineered mice — who are biologically similar to humans — during their research.
A fetus receives its nourishment via blood vessels in the placenta — a special organ containing cells from both the baby and its mother.
Therefore, healthy blood vessels are essential for the fetus to get the correct amount of nutrients that it needs. During pregnancy, a fetus sends a signal known as IGF2 from the placenta through the umbilical cord to prompt the correct expansion of these blood vessels.
Interestingly, the scientists discovered that the father’s genes try to expand the blood vessels in a bid to suck up more nutrients.
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