A collection of rat monoclonal antibodies recognizing monomorphic determinants of the mouse Thy-1 moecule (CD90) located in two spatially distinct epitope regions:Epitope B : H154-161 (IgG2c) ; H154-190, H154-11 (IgM) ; H140-61, H140-150 (IgG2b)Epitope C : H154-236, H154-57, H155-124, H154-262 (IgG2c), H154-177, H154-200 (IgG2b)