There are natural and synthetic peptides that perform body functions
Large amounts of foam mean peptide is trapped in air-liquid interfaces, reducing the actual concentration of your solution
Regarding the former, transgenic mice that exhibit delayed demyelination and white matter degeneration from a variety of causes (e.g., myelin gene defects, peroxisome-deficient or -synuclein overexpressing oligodendrocytes, or disruption of their gap junctions, to name a few) frequently show a secondary T- and occasionally a concomitant B-lymphocytic inflammation (Ip et al., 2006
While all drugs in the class have been shown to produce some metabolic changes, each drug has its own specific risk profile
The recommended protocol rotates all three (PDRN, EGF, GHK-Cu) across sessions so each gets a fresh chamber and the underlying biology of each pathway has time to compound