Acknowledgements
The authors wish to thank Drs Owen R. Van Cauwenberghe and
Kevin E. Breitkreuz for stimulating discussion, preparation of figures
and editorial comments on an earlier version of the manuscript,
and Professor Ulrich Heber for bringing the role of GABA
in the stabilization of biological membranes to our attention. This
work was supported by grants from the Natural Sciences and
Engineering Research Council of Canada to B.J.S. and A.W.B.,
and from the Ontario Ministry of Agriculture, Food and Rural
Affairs to B.J.S.