Enzymatic Analysis: A Practical Guide is a multipurpose manual of
laboratory methods. It offers a systematic scheme for the analysis of
biological materials from the level of the whole organ down to the
single cell and beyond. It is intended as a guide to the development of
new methods, to the refinement of old ones, and to the adaptation in
general of methods to almost any scale of sensitivity. As some may
realize, the book is a sequel to A Flexible System of Enzymatic
Analysis, originally published in 1972. The major changes, other than an
appropriate interchange of authors, consist of a wholly new chapter of
methods and protocols for measuring enzymes, the addition of 13 new
entries in the metabolite chapter, and a much superior chapter on
enzymatic cycling. With considerable nostalgia, we have switched from
DPN and TPN to NAD and NADP nomenclature, which no doubt will make Otto
Warburg turn over in his grave. The incentives for the methodology in
this book came from the rigorous demands of quantitative histochemistry
and cytochemistry. These demands are specificity, simplicity,
flexibility, and, of course, sensitivity--all likewise desirable
attributes of methods for other purposes. The specificity is provided by
the use of enzyme methods. Simplicity is achieved by leading all
reactions to a final pyridine nucleotide step.