2nd Most Common Hb in adult is
a 2 ss 2 is the most abundant Hb in adult About 2.5% of the hemoglobin is hemoglobin A2, in which b chains are replaced by d chains (a2d2) which is second most abundant Hb in adult humanRef: Ganong's Review of Medical Physiology Twenty-Third Edition Page No: 522
a 2 ss 2
a 2 g 2
a 2 d 2
ss 2 g 2
Cardiovascular system