Figure 2

Reversibility of platelet activation induced by exposure to 20° C. The first column (A to E) shows phase contrast micrographs of platelets incubated at 20° C for 10 minutes (A), 30 minutes (B), 1 hour (C), 3 hours (D), and 6 hours (E). The second column (F to J) depicts phase contrast micrographs after these samples were incubated at 37° C for 15 minutes. All samples were fixed with paraformaldehyde (2% final concentration) for 30 minutes at the appropriate temperature.