Albano-Aluquin, S., Malysz, J., Kidacki, M., Ratnam, M., Olsen, N. J. An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis. J. Vis. Exp. (144), e58713, doi:10.3791/58713 (2019).