Tantalum Particles Induced Cytotoxic and Inflammatory Effects in Human Monocytes

Table 2

The relative growth rate (RGR) and cytotoxicity level in the three groups.

Groups	24 h		48 h		72 h
	Growth rate (%)	Grade	Growth rate (%)	Grade	Growth rate (%)	Grade
Blank control	100.0	0	100.0	0	100.0	0
Ta particle	95.8	1	94.5	1	94.1	1
HA particle	96.9	1	94.2	1	93.9	1

Significant difference comparing with the blank control group ().