Delbert M. Shankel Departments of }1icrobiology and Biochemistry The
University of Kansas Lawrence, Kansas 66045 Welcome to the
"International Conference on Mecha. nisms of Antimutagen- esis and
Anticarcinogenesis. " We are delighted that so many of you have chosen
to attend this first meeting on this important topic. The significance
of genetic changes in cells has been recognized for many years. The
seminal observations of Henri in 1914 (UV), Muller in 1927 (X-rays), and
Auerbach in 1946 (chemical agents) established the fact that physical
and chemical agents which may be present in our environment are capable
of producing profound changes in heredity. It is now well-estab- lished,
of course, that such changes can result in the development of can- cer,
produce hereditary birth defects, alter microorganisms to cause drug
resistance, or other harmful (or even beneficial) changes; it is likely
that the processes of mutagenesis and the intricate balance between
muta- genesis and antimutagenesis are involved in aging, evolution, and
other fundamental life processe8. Consequently, we hope and believe that
assem- bling thi. s group of scientists to share current fundamental and
applied research in these areas will lead to a better understanding of
these proc- esses and to long-term benefits for society. As stated
clearly by Garfield (4), "Almost every aspect of modern liv- ing exposes
us to health risks.