the % contents of these elements in chinese medicines range from 4.1 to 38.6 % ( average : 12.7 % ) for protein , 0.1 to 10.5 % ( average : 1.3 % ) for phosphorus , 1.6 to 13.8 % ( average 4.5 % ) for potassium and 0.1 to 2.5 % ( average : 0.5 % ) for magnesium .
C0013879
elements
C0031705
phosphorus