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Biochem J 419:475484 Pellerin L, Bouzier-Sore AK, Aubert A, Serres S, Merle M, Costalat R, Magistretti PJ (2007) Activity-dependent regulation of energy metabolism by astrocytes: an update

Manieri, T
The apparent lack of a direct effect was noted due to the in vitro environment not mimicking the inherent environment of a tendon in vivo

The study by Xu et al

This approach addresses one of the major challenges in peptide therapy for bone healing: getting enough of the active compound to the fracture site