human recombinant interleukin-2 ( il-2 ) and a soluble recombinant form of the human p55 ( tac antigen ) component of the il-2 receptor ( il-2r ) have been cocrystallized in 1.7-1.8 m ammonium sulfate , in the ph range 7.0-8.2 .
C0021756
recombinant interleukin-2
C0086418
human