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ncbi.nlm.nih.gov
R5pp4
TIL that when swallowing, the tongue elevates to push food back into the pharynx.
nWoaP
TIL During early development the gonads of the [human] fetus remain undifferentiated; that is, all fetal genitalia are the same and are phenotypically female.
78kRP
TIL suicide bombs can result in human shrapnel. Pieces of the bomber become lodged in survivors.