Science: v.1-v.219

acid activity addition American animals appear applications associated biology cells chairman chemical Chemistry comets complete concentration containing Department determined discussion effect electron experiments fact field function gametophytes given human important increase indicated Institute interest International laboratory lead less major material means measured mechanism membrane ment method minutes Model nature normal Notes observed obtained occur operation organic percent period phase physics placed position possible preparation present Press problems produced protein range reaction recent record References response samples School Science scientific scientists separation similar single solution space specific structure studies suggest Table temperature theory tion United University values volume write York