Table 1. Human monocytes adhered and activated on Col and Col-Au nanocomposites.

Materials	Nnumber of monocytes (×104)	Number of macrophages (×104)	Conversion ratio (%)
TCPS (control)	2.36±0.25	0.57±0.31	34.75±0.10
Col	2.39±0.49	0.50±0.10	21.00±0.05*
Col-Au 17.4 ppm	2.05±0.28	0.26±0.03	14.30±0.03**
Col-Au 43.5 ppm	1.93±0.14	0.22±0.05	11.20±0.02**
Col-Au 174 ppm	2.15±0.18	0.51±0.08	23.00±0.02

*p<0.05, greater than TCPS (tissue culture polystyrene);

**p<0.01, greater than TCPS.