“…These two deficiency disorders, however, appear to be qualitatively different from those disorders described in association with Hodgkin's disease and sarcoidosis. In the latter diseases, expression of delayed-type hypersensitivity is severely suppressed or absent, but antibody formation may appear normal (28)(29)(30)(31). It is apparent, therefore, that different patterns of immunologic reactivity can be associated with different pathological entities involving the lymphoreticular system.…”