| Type | MGI:General | Description | contact hypersensitivity induced by epicutaneous application of FITC in the ear lobe is completely absent, as assessed by ear swelling at 24 and 48 hrs after reexposure of sensitized homozygotes to the same antigen delayed type hypersensitivity induced by s.c. injection of KLH in the ear lobe is completely absent, as assessed by ear swelling at 24 and 48 hrs after reexposure of sensitized homozygotes to the same antigen |