abnormal innate immunity abnormal lymphocyte physiology abnormal NK cell physiology 2010-12-10T11:34:06Z CL:0000623 FMA:63147 FMA:83601 MP:0005069 MP:0010766 MPheno.ontology NK cell dysfunction abnormal natural killer cell physiology any functional anomaly of a lymphocyte that can spontaneously kill a variety of target cells without prior antigenic activation via germline encoded activation receptors, and also regulate immune responses via cytokine release and direct contact with other cells csmith dysfunctional NK cells natural killer cell dysfunction