[Illustration: WALTER E. KISIELESKI is an Associate Scientist in the
Division of Biology and Medicine of the Argonne National Laboratory. He
was formerly associate professor of chemistry at Loyola University in
Chicago. His undergraduate studies were at James Millikin University in
Decatur, Illinois, and his graduate studies were at the University of
Chicago. He received an Honorary Doctor of Science degree from James
Millikin University in 1962. In 1958 he was a delegate to the Second
Atoms for Peace Conference in Geneva, Switzerland. He was visiting
lecturer in the department of biochemistry at the University of Oslo in
Norway in 1963. Dr. Kisieleski is shown operating an automatic
windowless strip counter that scans paper chromatograms and thus locates
labeled substances.]
[Illustration: RENATO BASERGA was born in Milan, Italy, and received a
medical degree from the University of Milan in 1949. He is presently
research professor of pathology at the Fels Research Institute at Temple
University Medical School in Philadelphia, and associate editor of the
journal, _Cancer Research_. Formerly he was associate professor of
pathology at Northwestern Medical School in Chicago, where he was the
recipient of a Research Career Development Award from the National
Institutes of Health.]
_Radioisotopes_
AND LIFE PROCESSES
By WALTER E. KISIELESKI
and RENATO BASERGA