HbA2 Phenomenon (IMAGE) Science China Press Caption A: The HbA2 phenomenon. B: Cross electrophoresis. C: Bidirectional diagonal electrophoresis. D: Unidirectional multiband re-release of Hb. E: Bidirectional multiband re-release of Hb. Credit ©Science China Press Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.