AUTHOR’S ABSTRACT OF THIS PAPER ISSUED 
BY THE BIBLIOGRAPHIC SERVICE, JANUARY 19 
A STUDY OF THE LIPOID CONTENT OF THE KIDNEY 
TUBULE 
CHRISTIANNA SMITH 
Department of Histology and Embryology, Cornell University, Ithaca, New York 
FOURTEEN FIGURES (TWO PLATES) 
CONTENTS 
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INTRODUCTION 
The omnipresence of lipoids in the tissues has been pointed 
out by chemists and studied by many. Cowdry, in his excellent 
summary of the functional significance of mitochondria, which 
are related to the phospholipins, quotes Matthews (715) apropos 
of this, who says that phospholipins are found in all cells, and 
that it is undoubtedly their function to produce, with choles- 
terol, the peculiar semifluid, semisolid state of protoplasm. 
However the presence of lipoids has been overlooked by histol- 
ogists in general until quite recently, because they are dissolved 
in many fixers and require special technique to preserve them. 
That lipoids are present in kidney cells has been known, but 
almost always it has been connected with pathological changes. 
Believing that microscopically lipoids could be demonstrated in 
normal cells, this study of the lipoid content of renal epithelium 
69 
