Explore a comprehensive 25-minute video lecture on the fundamental components of blood: White Blood Cells (WBCs), Platelets (PLTs), and Hemoglobin (Hgb). Delve into the structure, functions, and clinical significance of these vital blood elements. Learn about platelet formation, red blood cell characteristics, and the crucial role of hemoglobin in oxygen transport. Examine the heme molecule, its functions, and its importance in the placenta. Gain insights into sickle cell disease and its impact on hemoglobin structure. Perfect for medical students, healthcare professionals, and anyone interested in hematology and human physiology.