Figure 2
From: Immunological effects of shift work in healthcare workers

Proportions of night-shift workers (black) and non-shift workers (grey) who expressed CD4 T cell (a) and CD8 T cell (b) proliferation as a response to the different stimuli (>0% stimulus-specific T cell proliferation). An asterisk indicates a statistically significant difference (p < 0.05) between night-shift and non-shift workers tested using the chi-square test.