... differen-tiation arrest in mice [35]. These results indicate thatheme is essential for differentiation of erythroid cells. Inthis context, our preliminary data suggest that treatment for 48 h ... andevidence for their separate regulation. J Biochem(Tokyo) 113, 214–218.10 Takeda K, Ishizawa S, Sato M, Yoshida T & ShibaharaS (1994) Identification of a cis-acting element that is responsible for ... Sendai, Japan3 Department of Biochemistry, Yamagata University School of Medicine, Yamagata, JapanHeme oxygenase (HO) is the rate-limiting enzyme inheme catabolism and cleaves heme to release iron,...