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Potentially, the presence of IGF-1 in tendon regenerative healing has been reported to be associated with the activation of M2 macrophages (Prabhath et al., 2018)

Vita JA, Frei B, Holbrook M, Gokce N, Leaf C, Keaney Jr JF

Dihexa is another neuro-focused peptide that appears to enhance communication between brain cells

10.3233/JAD-160884 397 SherinJ

Randomly getting B12 injections because you think you might be low is an expensive gamble
