Tonbo offers the popular APO-BrdU™ and APO -DIRECT™ Kits for measuring apoptosis by flow cytometry. The APO-BrdU Kit employs a sensitive two-step method where cells are first labeled with Br-dUTP, after which sites of incorporation are detected by staining with a FITC anti-BrdU antibody. The APO-DIRECT Kit provides an easy single-step protocol for directly labeling samples with FITC conjugated dUTP. A BrdU-based kit for measuring cell proliferation and cell cycle position is also available. The EZ-BrdU™ Kit provides reagents required for incorporation of BrdU into cycling cells and subsequent detection with a FITC anti-BrdU antibody.