Blood is a vitally important part of the body. It provides the oxygen our organs need to survive, carries platelets that clot when we cut ourselves, and prevents us from getting infections. But it is also immensely complex. In this episode, Jonathan and Kathriona meet the researchers investigating the effects of Covid-19 on our platelet's ability to clot, discuss the impact of Long Covid, and the work being carried out to further our understanding of the condition that affects thousands of people across Ireland.