The video explains the introduction of Paroxysmal Nocturnal Hemoglobinuria. If you are looking for a video to clear all your concepts about this topic, this video is a hit. Must watch! TIMELINE: 0:00 Introduction 0:28 What is PNH? 2:28 Complement system 3:06 Alternate pathway of complement 4:34 How does the complement differentiate between self and non-self? 5:58 Recap 7:54 Clinical features 9:05 Diagnosis 10:45 Treatment