This information is used to determine the density of the air entering the combustion chamber (in conjunction with the IAT (Intake Air temperature) sensor), which is used when calculating the proper air/fuel mixture for the engine, especially at WOT since the system is not in closed-loop at this time.
The TTR gene provides instructions for producing a protein called transthyretin. This protein transports vitamin A (retinol) and a hormone called thyroxine throughout the body. To transport thyroxine, four transthyretin proteins must be attached (bound) to each other to form a four-protein unit (tetramer).
Gut hormones. Incretin hormones are produced by the gut and are released following food ingestion resulting in a more potent release of insulin, than that observed when glucose is infused intravenously. This effect, termed the âincretin effect,â suggested that signals from the gut are important in the hormonal regulation of glucose disappearance.