TEbe mnfx>et*tt ot 



STUDY OF THE DISTRIBUTION OF 

 IODINE BETWEEN CELLS AND COL- 

 LOID IN THE THYROID GLAND 



A DISSERTATION 



SUBMITTED TO THE FACULTY 



OF THE OGDEN GRADUATE SCHOOL OF SCIENCE 



IN CANDIDACY FOR THE DEGREE OF 



DOCTOR OF PHILOSOPHY 



DEPARTMENT OF PHYSIOLOGICAL CHEMISTRY AND PHARMACOLOGY 



BY 



HARRY BENJAMIN VAN DYKE 



Private Edition, Distributed By 



THE UNIVERSITY OF CHICAGO LIBRARIES 



CHICAGO, ILLINOIS 



Reprinted from 



'he JOURNAL OF BIOLOGICAL CHEMISTRY, Vol. XLV, No. 2, 1921 ; Vol. LIV, No. i, 1922 

 The AMERICAN JOURNAL OF PHYSIOLOGY, Vol. LVI, No. i, 1921 



