Red blood cells do not have nuclei or mitochondria so they have more space for haemoglobin molecules, made up of lots of iron + other atoms, which carry oxygen around the body so every other cell can use it
Efficacy and safety of coadministered onceweekly cagrilintide 2.4 mg with onceweekly semaglutide 2.4 mg in type 2 diabetes: a multicentre, randomised, doubleblind, activecontrolled, phase 2 trial
Theyre easy to take, widely available, and dont require a healthcare professional to administer
A sensible experiment spreads doses across at least three orders of magnitude, something like 1, 10, and 100 nanomolar on up to 1 and 10 micromolar, precisely because the sweet spot moves with the copper-to-peptide ratio, the buffer, and how much serum sits in the media