United States Biological  Primary Company Focus: Manufacturing  United States Biological provides the greatest  selection of antibodies in the world. We  currently supply over 40,000 antibodies,  antigens, biochemicals and biologicals and we  have recently added over 10,000 new products to  our website http://www.usbio.net  Product Mix:  Antibodies, Biochemicals, Agarose, Albumin, Amino  Acids, Antibiotics, Enzymes, Bacterial and Yeast  Media, Cell Culture Media, Molecular Biology  Kits, Oligos, Restriction Enzymes.  Stringent Quality Control Testing:  DNase, RNase, protease, bioburden, growth  performance, strain selection assays, blue-white  cloning, background fluorescence, restriction  enzyme digestion, endotoxin, 9CFR sterility  testing, physical and chemical properties.  Broad Production Capabilities:  Antibiotics, Antibodies, Biochemicals,  Carbohydrates, Cell Culture Media, Enzymes,  Oligos, Peptides, Human & Animal Sera, Molecular  Biology Kits  Quality Control and Manufacturing Guidelines:  IACUC, NIH, Levels 1,2 Biosafety Containment  Custom Services:  Antibody Production and Conjugation, Human Serum  Processing, Protein & Gene Expression, Enzyme  Manufacturing, Fermentation Process Development,  RNA & DNA Production, Phage and Genomic DNA  Isolation, Transfection, Subcloning, Southern and  northern Blot Analysis, Peptide Synthesis.