3-4- Innate lymphoid cells
Innate lymphoid cells (ILCs) are innate immune effector cells that lack
the expression of rearranged antigen receptors (T cell receptor
[TCR] and B cell receptor [BCR]). The ILC family is divided into
two main groups: the cytotoxic natural killer (NK) cells and the
non-cytotoxic helper ILCs, including ILC1, ILC2, and ILC3 (Vivier et
al., 2018). Conventional NK cells include CD56brightCD16 NK cells and
CD56dimCD16+ cells that are specialized in cytokine production or
cytotoxicity, respectively.