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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Spine J. 2013 May 14;13(11):10.1016/j.spinee.2013.03.047. doi: 10.1016/j.spinee.2013.03.047

Figure 2.

Figure 2

Secreted VEGF-A (A), FGF-2 (B), and angiopoietin-1 (ANG1, C) were measured in the conditioned media of cells cultured on TCPS, PEEK, smooth titanium alloy (sTiAlV), or rough titanium alloy (rTiAlV). Levels were normalized to total cell number. *p<0.05, versus TCPS; #p<0.05, versus PEEK; $p<0.05, versus sTiAlV. TCPS, tissue culture polystyrene; PEEK, poly-ether-ether-ketone; sTiAlV, smooth Ti6Al4V; rTiAlV, roughened Ti6Al4V.