Platelet adhesion to
test surfaces. (A) KOD surfaces displayed
similar levels of platelet adhesion to glass and RTT, significantly
higher than TCP. Low-magnification images of platelets adhered to
surfaces qualitatively showed platelet density: (B) TCP, (C) glass,
(D) RTT, (E) KOD, (F) PURA. Scale bar: 10 μm. At high magnification,
platelet spreading and clumping was indicative of higher platelet
activation: (G) TCP, (H) glass, (I) RTT, (J) KOD, (K) PURA. Scale
bar: 2 μm. Noncritical point dried (air-dried) samples did not
show nanofibrous structure of underlying matrix. (n = 6, p < 0.05 between different Greek symbols).