This is a #natural #clock. Made up of only 3 proteins. It comes
   from #bacteria. We have a more advanced version of the same
   #circadian in us
   [vine id = "Mj1Tx3QwV6Q"]
   This is a #natural #clock. Made up of only 3 proteins. It comes
   from #bacteria. We have a more advanced version of the same
   #circadian in us