Chemical, biochemical, and biological preparations, reagents and substances for scientific, research, laboratory and industrial purposes, all the aforesaid except for medical and veterinary purposes; diagnostic reagents, buffers, buffer solutions, buffer-screening stock solutions, ligands, hiv-immunogens, antibodies, namely, therapeutic antibodies, monoclonal antibodies, and antibody reagents, proteins, aptamers, antigens, biochemicals for in vitro and in vivo applications for scientific, res...