1. Klein E, Masucci MG, Masucci G, Vanky F. Natural killer activity of human blood lymphocytes. Mol Immunol. 1982;19:1323–9.
2. Holmberg LA, Ault KA. Characterization of natural killer cells induced in the peritoneal exudates of mice infected with Listeria monocytogenes: a study of their tumor target specificity and their expression of murine differentiation antigens and human NK-associated antigens. Cell Immunol. 1984;89:151–68.
3. Klein E, Vánky F, Vose BM. Natural killer and tumor recognizing lymphocyte activity in tumor patients. Haematologia. 1978;12:107–12.
4. Lefkowitz M, Kornbluth J, Tomaszewski JE, Jorkasky DK. Natural killer-cell activity in cyclosporine-treated renal allograft recipients. J Clin Immunol. 1988;8:121–7.
5. Kwak JY, Beaman KD, Gilman-Sachs A, Ruiz JE, Schewitz D, Beer AE. Up-regulated expression of CD56+, CD56+/CD16+, and CD19+ cells in peripheral blood lymphocytes in pregnant women with recurrent pregnancy losses. Am J Reprod Immunol. 1995;34:93–9.