“…PRIMARY acquired hypogammaglobulinaemia, characterized by frequent bacterial infections (particularly of the sinuses and respiratory tract), a very low serum level of y globulin and failure to produce antibody in response to antigenic stimulation has been associated with a variety of other disorders. These include diseases of the reticulo-endothelial system such as lymphosarcoma, Hodgkin's disease, leukaemia and multiple myeloma (Douglas, Goldberg and Fudenberg, 1970;Fudenberg, 1971) and auto-immune disorders including acquired haemolytic anaemia, rheumatoid arthritis (Fudenberg, 1971) and pernicious anaemia (Lee et al, 1964;Conn et al, 1968;Twomey et al, 1969).…”