Hello Mayada Darweesh

For CD-markers of NK cells you can refer to the links below.

https://www.cusabio.com/c-20973.html

Article Markers and function of human nk cells in normal and patholo...

Best.

by the presence of CD56 and the absence of CD3 (CD56+, CD3−). NK cells (belonging to the group of innate lymphoid cells) are one of the three kinds of cells differentiated from the common lymphoid progenitor, the other two being B and T lymphocytes

CD56+/CD3- in humans, NK1.1+/CD3- or can also use DX5 in mice