Fig. 2

Melatonin treatment results in an increased quantity of NK cells in the spleen, bone marrow, and liver of aged mice. (A) Following melatonin administration, flow cytometry was employed to analyze the proportion of NK cells in the spleen, bone marrow, lymph nodes, liver, and lungs of the mice. (B) Statistical graph depicting the proportion of NK Cells in various mouse organs. (C) Statistical graph illustrating the absolute numbers of NK Cells in various mouse organs. The data is presented as means ± SD. n = 6. Unpaired two-tailed Student’s t-tests were conducted utilizing Prism software. A p-value of less than 0.05 was deemed statistically significant. *P < 0.05, **P < 0.01