This lecture is a preview. Please visit to purchase it and others. AutoimmunityAutoimmunity (Disease Cause)BarrierFUNCTIONGerryhealthIMMUNEimmune systemImmune System (Literature Subject)IMMUNITYImmunology (Field Of Study)InnateInnate Immune SystemNATURALShwalfenbergSYSTEMvideoVITAMINVitamin (Chemical Compound)Vitamin D (Nutrient)vitamin immune systemvlogYouTube