our results indicate that ( a ) even though ionic surfactants induce both swelling and shape alterations in erythrocytes these two changes are not necessarily connected , and that ( b ) the different shapes induced by cationic and anionic surfactants can not be due to differences in the distribution of the surfactant molecules within the lipid bilayer of the erythrocyte membrane alone .
C0022023
ionic
C0007447
cationic