Fig. 4From: Cartilage boundary lubrication synergism is mediated by hyaluronan concentration and PRG4 concentration and structureEffect of addition of R/A PRG4 on HA cartilage boundary lubricating ability. μstatic,Neq (a), and <μkinetic,Neq> at Tps = 1.2 s (b) for HA, HA + [R/A PRG4] = 450 μg/mL, and HA + [PRG4] = 450 μg/mL (Test 4). * = p < 0.05Back to article page