Visualizing Structures within Tissue To see structure within biological tissue such as organs, it is necessary to first label the tissue. Antibodies are frequently used for this purpose, and this is known as “immunolabelling”. iDISCO: Adult mouse kidney, screen capture via https://www.youtube.com/watch?v=HCdSCMlNafk Antibodies are specific to certain “markers”, or antigens, and immunolabelling is used for