One of the remarkable aspects of the kinetic analyses is the existence of a form of mutual catalysis between different lipid types. This finding suggests that each lipid may act as a rate modifier and influence the accretion rates of another lipid in a micellar context. Mutual catalysis among simple molecules has been reported before , particularly in lipid systems , yet has not been quantitatively explored in detail. Excitingly, rate modifications appear to distribute very unevenly, and when present, they occur with significant probemodulator specificity. These conclusions match previous GARD predictions , and strengthen the treatment of mixed micelles as nanoreactors . It is reasonable to assume that mutual rate modification applies for most (if not all) lipophilic molecules, and thus more diverse micellar systems will produce more complex catalytic networks.