GAD-Alum (Diamyd) Administered Into Lymph Nodes in Combination With Vitamin D in Type 1 Diabetes (DIAGNODE-1)

The objectives of the main study is to: * Evaluate the safety of giving GAD-Alum (Glutamic acid decarboxylase) (Diamyd) directly into lymph glands in combination with an oral vitamin D regimen * Evaluate how the above mentioned treatments influence the immune system and endogenous insulin secretion. The objective of the sub-study is to: * Evaluate safety after a fourth injection with 4 μg GAD-Alum direct into an inguinal lymph gland in 3 adult patients from the main study * Evaluate how the above mentioned treatment influences the immune system and endogenous insulin secretion.