This scientific illustration depicts immune system cells, specifically T-cells and macrophages, amidst numerous cortisol molecules. The T-cells appear in light blue, spherical shapes with some detail on their surface, while the macrophages are green and irregularly shaped with a textured surface. Orange hexagonal clusters represent cortisol molecules interacting with the cells. The background features an intricate network of purple, tubular structures and red blood cells, suggesting a complex biological environment. The image highlights the interaction between immune cells and cortisol in the body.