👉 HR (Hemoglobin-rich) blood cells carry oxygen through red blood cells with their protein structure, binding up to four oxygen molecules each. When a person exercises vigorously, these cells rapidly deliver oxygen efficiently.
👉 HR (Hemoglobin-rich) blood cells carry oxygen through red blood cells with their protein structure, binding up to four oxygen molecules each. When a person exercises vigorously, these cells rapidly deliver oxygen efficiently.
