Effect of temperature on clot retraction force. (a) Clot retraction force CRF measured by mHRM plotted as a function of time, at both 37 °C and 25 °C. (b) Bar plots of reaction time Tr, time to maximum amplitude Tmax, CRF growth rate GCRF, and the maximum CRF CRFmax as a function of temperature. Data represents mean ± s.e.m with n = 4 at 25 °C and n = 5 at 37 °C. **, P < 0.01. N.S., P > 0.05.