New City Osaki Clinic homepage > Frequently asked questions > Question 16
We consider it more effective to have T cells mixed with NK (natural killer) cells than injecting only NK cells.
This is because there are some cancer cells for which NK cells are more effective and other cancer cells for which T cells are more effective.
At our clinic, we culture and increase the cells adjusting the proportion of NK cells and T cells as much as possible to about 50% each.
The T lymphocytes increased are mainly NKG2D-positive cytotoxic T cells.
These T cells characteristically have a high positive rate of CD56 and a very strong capability to kill cancer cells.