Carcinomatous pleural effusions of 25 of 32 patients with lung cancer, which had markedly
low or no natural killer (NK) activity against K562 cells in a 4 h chromium release assay …

Lymphocytes isolated from axillary lymph nodes draining breast carcinoma were tested for
natural killer (NK) activity against K562 in a 4-h 51 Cr-release assay, and the in vitro effects …

NK cell activity was studied in 28 cases of acute leukaemia in remission. It was found that
patients in long‐term remission for 5 years or more had normal NK cell activity but those in …

The k‐562 tumour cell is a highly susceptible target for natural killer (NK) cell lysis by
lymphocytes of human peripheral blood. We have studied the antigenic relationship …

Large granular lymphocytes (LGLs) from patients with malignant disease and from controls
were activated by endotoxin or K562 cells, and the supernatants assayed for interleukin-1 …

Natural killer (NK) cell activity was examined in breast cancer patients before and after
surgery, and the cells involved in the postoperative depression of cytotoxicity were …

Natural killer (NK) activity in rats and NK and antibody-dependent cell-mediated cytotoxicity
in mice have been shown to be rapidly augmented by in vivo treatment with a variety of …

Ten species of purified human leukocyte interferon were tested for their ability to modulate
the cytolytic activity of natural killer (NK) cells and the cytolytic and cytostatic activities of …

Spleen cells serially sampled from normal mice following partial hepatectomy were tested
for antibody-dependent cellular cytotoxicity (ADCC) and natural killer (NK) activity. There …

Natural killer (NK) cytotoxicity was assessed against K562 targets in 14 melanoma patients
who received daily im doses of human leukocyte interferon (IFN) for 42 consecutive days …