Hydrogen sulfide (H2S), known for its characteristic rotten egg smell, like many other gases, can be helpful in small doses yet deadly in large amounts. A new collaborative study from the lab of Ruma Banerjee, Ph.D., a professor in the University of Michigan Medical School Department of Biological Chemistry, examined the interaction between three naturally occurring gases (nitric oxide (NO), oxygen, and H2S) during the generation of new blood vessels, called angiogenesis. Read along to learn more about the study and its findings.