HIV pushes the immune system to its limits. Our body's usual antiviral arsenal is coordinated, in part, by immune cells called Helper T cells. But HIV attacks Helper T cells directly, eventually leading to AIDS. This animation shows the cellular and molecular mechanisms employed on both sides of the fight, and how antiretroviral drugs can help swing the balance in our favor.
Promoting a healthy gut microbiome may be a powerful strategy for lowering cholesterol and other heart attack risk factors. In this video, Reza Ghadiri presents research on molecules that can alter the bacterial population of intestines to a healthier state and how they have shown – through experiments in mice – that this reduces cholesterol levels and strongly inhibits the thickened-artery condition known as atherosclerosis.WATCH NOW