Fig. 2From: Thrombotic thrombocytopenic purpura in a patient on long-term alpha-interferon therapy for essential thrombocythemia: a case reportDynamic changes in platelet counts and lactate dehydrogenase (LDH) levels during hospitalization. The plasma exchange (PE) dates are denoted by blue arrows and hydroxyurea administration is denoted by a thin, black arrowBack to article page