Abstract
MY comments represent an effort to summarize some of the very recent observations that my colleagues and I have made regarding the impact of chronic progressive renal disease on the functional characteristics of the afflicted kidney and, in a broader sense, on the functional characteristics of the whole organism. The investigations that formed the background for the most recent chapter in a continuing search for information about renal disease arose entirely out of a clinical arena.The initial questions that we asked some years ago reflected uncertainty about many fundamental aspects of renal function in patients with renal disease. The . . .