“…WHILST depression of the PHA response in chronic lymphatic leukaemia (Smith, Cowling and Barker, 1972), Hodgkin's disease (Trubowitz, Masek and Del Rosario, 1966) and other malignant lymphomata (Papac, 1970) is now well established, the change in non-lymphoid malignancies remains in doubt. Most reports indicate that a similar depression occurs in the non-lymphoid malignancies (Silk, 1967;Ducos et al, 1970;Whittaker, Rees and Clark, 1970;Hann and Takita, 1972) but there are conflicting data indicating that the response may be normal (Robinson and Hurvitz, 1966;Sutherland, Inch and McCredie, 1971;Nelson, 1969).…”