TECHNE Corporation develops, manufactures, and sells biotechnology research and diagnostic products, and hematology calibrators and controls worldwide. The company's Biotechnology segment offers proteins, such as cytokines, and enzyme substrates and inhibitors; antibodies, including polyclonal and monoclonal antibodies; immunoassays comprising quantikine kits for the detection of human and animal proteins, and immunoassays that allow researchers to quantify a specific analyte in a biological fluids sample; clinical diagnostic immunoassay kits consisting of erythropoietin, transferrin receptor, and beta2-microglobulin immunoassays for use as in vitro diagnostic devices; flow cytometry products, such as fluorochrome labeled antibodies and kits; intracellular cell signaling products, including antibodies, phospho-specific antibodies, antibody arrays, active caspases, kinases, phosphatases, and enzyme-linked immunosorbant assays to measure the activity of apoptotic and signaling molecules; and natural and synthetic chemical compounds for use as agonists, antagonists, and inhibitors of various biological functions by investigators. Its Hematology segment provides a range of hematology controls and calibrators for impedance and laser type cell counters; and hematology control products for use as proficiency testing tools by laboratory certifying authorities. The company was founded in 1976 and is headquartered in Minneapolis, Minnesota.