They're simply the result of fat sitting beneath the surface of the skin and pushing up against the connective tissue
In any case, well touch on both points
Common genetic variants cause minor changes in cellular B12 levels.[ref] Vitamin B12 Genotype Report: Access this content: An active subscription is required to access this content
Current practice patterns extrapolated from animal studies and online communities typically involve subcutaneous injection of 0.25-0.5 mg once or twice daily, or oral administration of 0.5-1 mg daily to compensate for lower bioavailability
TL;DR Reconstituting a lyophilised research peptide correctly means: pick the right diluent (bacteriostatic water with 0.9% benzyl alcohol), use the right volume based on your concentration maths, inject slowly down the inner vial wall, swirl gently (never shake), and store at 28C
Extracellular matrix injections: Extracellular matrix (ECM) injections are injections that are administered in a time-sensitive, specific manner by Dr