Pegylated Mechano-Growth Factor (PEG-MGF) is a modified version of mechano-growth factor (MGF), a splice variant of insulin-like growth factor-1 (IGF-1), designed to enhance stability and extend its half-life in research environments. By attaching a polyethylene glycol (PEG) chain, PEG-MGF becomes more resistant to rapid degradation, allowing for prolonged activity and improved consistency in experimental studies.