 Cilmibaadhista oo ay sameeyeen xeeldheereyaal ka tirsan kulliyadda caafimaadka ee jaamacadda Pennsylvania ee Maraykanka, natiijadeeduna ay soo baxday jimcihii shalay oo uu faafiyey Joornaalka Scientific Reports ayaa lagu ogaaday, ayaa muujisay in: 