In histological studies, Caspase 7 can be examined using various techniques. Immunohistochemistry (IHC) is widely used to detect Caspase 7 expression and activation. This involves using specific antibodies that bind to active Caspase 7, allowing visualization under a microscope. Additionally, Western blotting and flow cytometry can be used to study Caspase 7 levels and activity in tissue samples.