pyy and glp 1 Gut hormones like ghrelin (↑ hunger) & GLP-1/PYY (↓ hunger) signal to the hypothalamus' arcuate nucleus. Orexigenic (AgRP/NPY) & anorexigenic (POMC/CART) neurons integrate these signals, regulating food intake via Y1/Y5 & Mc4 Engineering a potent and long-acting
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