Plasma recalcification profile on surfaces. (A) PPP +
Ca2+ incubated on KOD, RTT, PURA, and TCP surfaces showed
characteristic
clotting kinetics as a function of time, compared to negative control
PPP without Ca2+ on TCP. Data was normalized to respective
sample absorbance at 50 min. Negative control absorbance was normalized
to TCP 50 min absorbance. (B) PPP clotting rate as measured by the
slope of linear region of the curves showed no significant difference
for the surfaces. (C) Clotting time as determined by half-max time
showed that hydrogel surfaces clotted more quickly than TCP. (n = 6, *p < 0.05 between different Greek
symbols).