PAGE of Hbs in Triton X-100 and acid-urea. The strain of mice from which the Hb was obtained and the kinds of globin chains present in each Hb are as follows: Lane 1, strain C57BL/6, mα^a, and mβ^s; lane 2, HBB/S2, mα^a, mβ^s, and mβ^s2; lane 3, HBA/G2, mα^a, mα^g2, and mβ^s; lane 4, M-Tg58Ru, mα^a, mα^g2, hα, mβ^s, mβ^s2, and hβ^{S Antilles}; lane 5, M-Tg98Ru, mα^a, mα^g2, hα, mβ^s, mβ^s2, and hβ^{S Antilles}; and lane 6, Tg58 × Tg98, mα^a, mα^g2, hα, mβ^s, mβ^s2, and hβ^{S Antilles}.