Explore the fundamentals of innate immunity and the complement system in this 19-minute biology and immunology lecture. Delve into the three complement pathways: classical, alternative, and mannose-binding lectin. Learn about the components of innate immunity, including plasma, white blood cells, lymphocytes, and natural killer cells. Gain valuable insights for medical professionals and students preparing for exams such as MCAT, DAT, NCLEX, COMLEX, PLAB, and USMLE.