NK Cells Express Receptors from Several Families, Each of Which

Multiple Choice

NK cells express receptors from several families, each of which has multiple members. Some of these receptors are activating and others are inhibitory, and NK cell activation is dependent on the balance of signaling overall. The individual NK cells in an individual:

A) Always express a majority of activating versus inhibitory receptors
B) Are more potent effectors of cytotoxicity than of cytokine-production
C) Each express only a subset of all possible NK receptors
D) Are not considered members of the innate lymphoid cell lineage
E) Undergo massive proliferation in response to infection, similar to T lymphocytes