One way in which this protein and, what is more important, specific isoforms can be studied in detail is through the use of antibodies. These specific antibodies can be used in protein-blotting experiments and applied to cells or tissue sections and observed under a microscope. This allows researchers not only to determine the level or concentration of an isoform or a group of isoforms but also to identify the cellular location of a particular isoform and associations with other cellular structures or proteins.