👉 Hemoglobin (Hb) is a protein in red blood cells that carries oxygen from lungs to body tissues. When oxygen levels are low, Hb releases it rapidly, ensuring vital organs get enough air.
👉 Hemoglobin (Hb) is a protein in red blood cells that carries oxygen from lungs to body tissues. When oxygen levels are low, Hb releases it rapidly, ensuring vital organs get enough air.
