results indicated that ( i ) physiological competency is directly related to the electrical charge on the cell surface , ( ii ) newly competent cells carry a maximal negative charge , ( iii ) the newly competent cell appears with spontaneous abruptness , ( iv ) a kinetic flow of competent cells from the highly charged fractions to the lower charged fractions indicates the progressive loss of the surface charge maintained by a competent cell , and ( v ) , by token of the latter statement , cells competent to undergo transformation do so within a range of surface-charge values .
C0699040
cell surface
C0007634
cells