"The item of $7,500 for apparatus, supplies, animals would permit us to use the large
number of animals required for some of our projected researches, and should permit
also the construction of a Tiselius apparatus for the electrophoretic separation of
antibody fractions by the suggested method of combination with charged haptens, and
for other investigations." Linus Pauling. Letter to Warren Weaver. January 2, 1941.