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Nielsen BioSciences - Cell Mediated Immunity (CMI) - Delayed Type Hypersensitivity (DTH)Valley Fever in the News. Skin Test Antigen For Cellular Hypersensitivity). The only FDA-approved delayed-type hypersensitivity (DTH). Based skin test antigen available to assess cell-mediated immunity. CANDIN should not be used to diagnose or treat Type 1 allergy to. Spherule-Derived Skin Test Antigen). The only FDA-approved skin test antigen to assess cell-mediated immunity to. The causative agent of Valley Fever (coccidioidomycosis). Commonly referred to as the "Valley Fever Skin Test". Systemic react...
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