
HY500118 by Applied Biological Materials (ABM) is a rabbit monoclonal antibody (clone IHC101, IgG) targeting IDO1, a tryptophan-catabolizing enzyme that mediates immune suppression in the tumor microenvironment. Validated for IHC at 1:50–1:200 and ELISA. Requires a rabbit-compatible secondary system. MBP is a registered vendor for Howard Hughes Medical Institute, Vanderbilt University, and MD Anderson Cancer Center.