Segment 1: What a Gas. University of Alabama â Birmingham researchers Jeannette Doeller and David Kraus talk about the amazing properties of hydrogen sulfide gas. Although itâs lethal in even minute quantities, our bodies produce it and use it to good effect. Begins at 1:15.Segment 2: Research Progress on Colon Cancer. John Carethers of the University of California San Diego explains his research findings on colon cancer and the role that the DNA mismatch repair system plays. Begins at 15:24.Total time: 25:10Body Notes, the theme music at the beginning and end of the show, was composed by APS member Hector Rasgado-Flores and was performed by the San Diego Chamber Orchestra.Do you have a question about physiology? Donât be afraid to ask! Call our âAsk-a-Physiologistâ line at (301) 637-5634. Just leave your question as a voice mail and weâll have one of our experts answer it.
Life Lines - The Podcast of The American Physiolog.. 
