realizes has_specified_input inheres in role of has role material entity evaluant role specimen from organism immuno staining assay immunohistochemistry An immunostaining assay to detect and potentially localize antigens within the cells of a tissue section. IEDB IEDB Staining a brain tissue sample from an Alzheimer's disease patient with antibodies to amyloid beta to identify amyloid plaques. immunohistochemistry molecular label role metadata complete