  The paper describes the effect of anion I-3 on thermotropic mesomorphism of
fully hydrated dipalmitoylphosphatidylcholine bilayers. The biphasic behaviour
of melting temperature - I-3 concentration dependence and the increase of DELTA
T values with I-3 concentration (DELTA T = melting temperature - freezing
temperature) suggest the appearance of interdigitated phase of bilayers induced
by I-3 ions.
