The authors and publisher are pleased to present the twenty-sixth edition of Harper’s
Illustrated Biochemistry. Review of Physiological Chemistry was first published in 1939 and 
revised in 1944, and it quickly gained a wide readership. In 1951, the third edition appeared
with Harold A. Harper, University of California School of Medicine at San Francisco,
as author. Dr. Harper remained the sole author until the ninth edition and co-authored eight
subsequent editions. Peter Mayes and Victor Rodwell have been authors since the tenth
edition, Daryl Granner since the twentieth edition, and Rob Murray since the twenty-first
edition. Because of the increasing complexity of biochemical knowledge, they have added co-
authors in recent editions.