ABSTRACT
The policy for reviewing reactions and enzymes has been, not to write exhaustive reviews on each
reaction type, but to give a representative set of data for those that have received extensive
experimental study, and to concentrate relatively more effort on those that have not been extensively
studied or are novel. Where extensive studies have been carried out in several species, the results for
each species (and in some cases, each specific organs in that species) have been grouped together in a
single paragraph; occasionally results are grouped according to substrate.
