ODN 1668 control Negative control for ODN 1668 ODN 1668 Control contains GpC dinucleotides instead of CpGs and can be used as a negative control for ODN1668 (type B specific for mouse TLR9). Working concentration: 5 µM (10 μg/ml) Solubility: 5 mg/ml in water ODN1668 Control sequence 5'-tccatgagcttcctgatgct-3' (20 mer) Note: Bases are phosphorothioate (nuclease resistant). Quality control - The absence of bacterial contamination (endotoxins, peptidoglycans) is controlled using HEK-Blue™ TLR2 and HEK-Blue™ TLR4 cells.