Day 27 has 80 protein-coding genes, including AGT, which encodes angiotensinogen, a protein that is made in the liver. When your body wants to raise blood pressure, a small stretch of ten amino acids:
is snipped from angiotensinogen to create the hormone angiotensin. Angiotensin raises your blood pressure by acting on many organs: it changes how your kidney treats calcium, tells your brain to make you thirsty, and constricts your blood vessels.
AGT is conserved across bony vertebrates, meaning it is at least 420 million years old.
Click here the AGT gene on Day 27.