The X axis is the relative unit of protein from 0 to 100 units.
The Y axis is the relative specific activity (percentage of total enzyme
activity/percentage of total protein) of each fraction, from 0 to 9 units.
P1 fraction is shown as N
P2 fraction is shown as M
P3 fraction is shown as L
P4 fraction is shown as P
S fraction is shown as S.