In histological studies, CYP2J2 can be examined using various techniques such as immunohistochemistry (IHC) and in situ hybridization. These methods allow for the visualization of CYP2J2 expression in tissue sections, providing insights into its localization and relative abundance in different tissues. IHC involves the use of specific antibodies against CYP2J2, while in situ hybridization detects CYP2J2 mRNA, offering complementary information about its gene expression.