Mammals' nocturnal past shapes sun sensitivity - September, 2015
As you soak up the last rays of the summer sun, here's something to think about: if it weren't for a quirk of our mammalian evolutionary past, your body could probably produce its own sunscreen. Back in May, researchers reported that they had discovered a mechanism by which zebrafish can generate a non-pigment-based sunscreen compound known as gadusol. They also found that the genes encoding the pathway for gadusol production are widespread; they are present in other fish species, as well as in amphibians, reptiles, and birds...
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