Science: v.1-v.219

acid activity amount animals appear application associated behavior cells chemical complete concentration containing continuous culture Department described determined effect energy evidence example experiments fact field fraction give given glucose human Illus important increase indicate Institute interest laboratory lead less material means measurements mechanism ment method minutes nature normal Notes observed obtained occur operation organisms percent period physical plant Pleistocene position possible present Press pressure probably problems produced production range ratio rats reaction recent record References reported response sample Science scientific serum shown similar species structure suggest surface Table temperature tion unit University York