sentences:  TEDDY monitors participants for the presence of antibodies to insulin, GAD, IA2, and ZnT8 through regular testing.Study participants also provide a range of samples designed to give a comprehensive view of their exposure to environmental factors which could possibly trigger or protect against the development of autoimmunity and T1D.Samples collected for analysis include blood, nasal swabs, saliva, urine, stool, toenails, and drinking water.