Gas therapy for blood sugar disease (autoimmune diabetes (TIDM)): The gasotransmitter Hydrogen sulfide (H2S) increases PD-L1 expression,  augments Tregs function, promotes immune tolerance, increases pancreatic β-cell proliferation and regeneration, increases insulin secretion, improves insulin sensitivity, increases energy utilization, and reverses TIDM, via up regulation of its target gene, 6/April/2018,  7.09 am