The concentrations of both GFs in both plasma fractions (PPP and PRP) were determined using an ELISA kit of development with antibodies to human (Human TGF-beta1 DuoSet ELISA de R&D Systems DY240-05 and Human PDGF-BB DuoSet ELISA de R&D Systems DY220, respectively), following the methodology previously published by Miguel-Pastor et al. (33 (link)). To the knowledge of the authors, there are no commercial kits for GF determination in cats, so human kits were used for GFs determination as described by other researchers (27 (link), 51 ).
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