Ferric species of the giant extracellular hemoglobin of Glossoscolex paulistus as function of pH: an EPR study on the irreversibility of the heme transitions - Moreira, Leonardo Marmo; Poli, Alessandra Lima; Lyon, Juliana Pereira; Saade, Jamil; Costa Filho, Antônio José da; Imasato, Hidetake (Comparative Biochemistry and Physiology B, 2008)