INS and type 1 diabetes mellitus: Although administration of insulin transformed T1D into a potentially treatable disease, it also triggers life‐threatening complications such as hypoglycemia and ketoacidosis.[2] Manipulating the immune attack on β cells has emerged as a promising intervention for T1D in recent years.[3] Therefore, understanding the complex immune cell interaction within the pancreatic islets is vital for developing effective therapies to manage T1D.