Comparison of JNK1 and ERK2 activation in a Glanzmann’s thrombasthenia patient and control. Washed platelets from control in the presence or absence of RGDS peptide and patient were stimulated with 0.2 U/mL of thrombin under stirring conditions at the indicated times. Then platelet lysates were solubilized and analyzed for ERK2 and JNK1 activation.