In this episode of the InVite Health Podcast, Amanda Williams, MPH concludes her series on the workings of the immune system. Learn about the important role nutrients such as Vitamin A, Vitamin E and mushroom extract play in your immune defenses. Take advantage of an exclusive podcast offer today by visiting http://www.invitehealth.com/podcast. For more information on the products or studies mentioned in this episode, as well as a complete transcript of the audio, click here.