Impaired CD8+ T-cell reactivity against viral antigens in cancer patients with solid tumors.

Background: Patients with hematological malignancies are at increased risk for various infections. In patients with solid cancer, a variety of immunosuppressive mechanisms affecting T-cell response are described. We hypothesized that patients with advanced solid tumors may exhibit an impaired recognition of viral antigens.

Synthesis and antituberculosis activity of thiocarboxamide derivatives of Schiff bases.

Synthesis of some N-(4-thiocarboxamidobenzylidene)arylamines and N-(substituted benzylidene)-p-thiocarboxamidoanilines from various arylaldehydes and arylamines is described. Fourteen representative compounds were tested in vitro on the ground H37RV.

Advances in techniques of testing mycobacterial drug sensitivity, and the use of sensitivity tests in tuberculosis control programmes.

In a paper arising out of an informal international consultation of specialists in the bacteriology of tuberculosis held in 1961, an attempt was made to formulate criteria, and specify technical procedures, for reliable tests of sensitivity (the absolute-concentration method, the resistance-ratio method and the proportion method) to the 3 main antituberculosis drugs (isoniazid, streptomycin and p-aminosalicylic acid). Seven years later, a further consultation was held to review the latest developments in the field and to suggest how sensitivity tests might be put to practical use in tuberculosis control programmes. The participants reached agreement on how to define drug sensitivity and resistance, and stressed the importance of using a discrimination approach to the calibration of sensitivity tests.