for the ionic amphipathic agents , the direction of the changes in the relation between ko and k-contracture tension could be accounted for on the basis of the expected changes in surface charge , but the effects of these two types of agents on the rate of relaxation of submaximum k contractures were disproportionate and with the cationic series were opposite in direction to those produced by inorganic divalent cations .
C0022023
ionic
C0007447
cationic