This case, about a specific mutant of hemoglobin, focuses on visualizing and understanding the molecular basis of why an infant turned blue soon after birth and how the cyanosis resolved. The Happy Blue BabyOverview: This case explores the reasons for why an otherwise healthy infant turned blue, soon after birth. All tests done in the neonatal intensive care unit were unable to diagnose possible reasons for the cyanosis, so the infant was taken to a specialist. The case begins with the clinical …