Unit 5 · Animal Form and Function
Natural and artificial active immunity (infection and vaccines), natural and artificial passive immunity (antibodies given or passed on), and the disorders of the immune system: allergies, autoimmune diseases and immunodeficiency including AIDS.
Deshapriya Senevirathne. B.Sc. (Hons) Biology Special, University of Peradeniya — graduated with a class pass. All the content and lessons in A/L Biology on Paadama are reviewed by Deshapriya Senevirathne, and the lessons are taught by him.