NCR2 and lymphoma: The analysis of NKp44/NCR2 expression, an activating receptor only expressed on activated NKs (Figure 1, panel C) showed no difference between AIDS-RL and HIV-negative lymphoma patients (p > 0.05, NS) and between AIDS-RL and HIV patients without lymphoma but with <300 CD4/mm3 patients (p > 0.05, NS).