required FCS concentration to simulate wound healing processes

[Haibin]

Dear researchers,

With my speculations i just don't get any further. I just wonder, which concentration of FCS do you reckon as an appropriate to simulate the concentration of serum (incl. the whole bunch of growth factors, cytokines etc.) in the wound during the wound healing process.

In the majority of studies 10% FCS is being picked, but i haven't found even one article explaining why. 

You're my hope :)) 

Thanks in advance!!