Profile: Cell Signaling Technology, Inc. develops activation-state specific antibodies and other reagents for academic research, drug discovery & proteomics. We offer biotinylated peptide substrates, recombinant fusion proteins, nonradioactive kinase assay kits, substrate screening kits, HTScan kinase assays, active tyrosine phosphatases and active kinases. We offer chromatin regulation antibody products, organelle markers, tyrosine kinase/adaptors, nuclear receptor, antibody sampler kits, stem cell markers, MAPK signaling antibody products, angiogenesis antibody products and cytoskeletal signaling antibody products. We also deliver conjugated antibodies, rabbit monoclonals, motif antibodies, phosphoscan proteomics, chip kits & antibodies, flow cytometry, immunohistochemistry, immunofluorescence and siRNA.