There are enzymes that add them and take them away during embryogenesis to make us this functional organism with 26 billion different cells in the body, each one slightly different
Histological analyses of brain tissue of exposed animals demonstrated PS-MP-induced neuropathological changes
PubMed Sikiric, P., Seiwerth, S., Rucman, R., Kolenc, D., Vuletic, L.B., Drmic, D., Grgic, T., Strbe, S., Zukanovic, G., Crvenkovic, D., Madzarac, G., Rukavina, I., Sucic, M., Baric, M., Staroveski, M., Zoric, Z., Turkalj, I., & Aralica, G
Most of it is small, unblinded, and industry-sponsored, but it is not nothing
If further confirmed, this could be of important personal and societal impact