part_of
part of
part of
has part
has part
has_part
characteristic of
has modifier
natural killer cell
decreased NK cell number
absent NK cells
MP:0008046
absence of natural killer cells
absent natural killer cells
absence of lymphocytes 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
FMA:83601
CL:0000623
FMA:63147
MPheno.ontology
abnormal
absent
immune system