You can find all my A Level Biology videos fully indexed at https://www.freesciencelessons.co.uk/a-level-revision-videos/a-level-biology/

In this video, we look at active and passive immunity. First we explore natural and artificial active immunity and then we look at natural and artificial passive immunity.

Image credits:

Clostridium Tetani
https://commons.wikimedia.org/wiki/File:Clostridium_tetani.jpg
Content Providers(s): CDC, Public domain, via Wikimedia Commons

Vaccination
https://commons.wikimedia.org/wiki/File:Covid_vaccination_for_children_aged_12-14_in_India_01.jpg
Suyash Dwivedi, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Ultrasound
https://commons.wikimedia.org/wiki/File:Ecograf%C3%ADa_4D_-_Feto_12semanas_D.jpg
Rizome, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Colostrum
https://commons.wikimedia.org/wiki/File:From_Colostrum_to_Breastmilk_-_4241.jpg
Amada44, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Tetanus patient
https://commons.wikimedia.org/wiki/File:PHIL_tetanus.jpg
Photo Credit:Content Providers(s): CDC, Public domain, via Wikimedia Commons

Horse
https://commons.wikimedia.org/wiki/File:Haflinger_horse_on_pasture_in_the_Netherlands.jpg
Paula Jantunen (user Niora), Public domain, via Wikimedia Commons

Tetanus toxin
https://upload.wikimedia.org/wikipedia/commons/7/78/PDB_1a8d_EBI.jpg
Jawahar Swaminathan and MSD staff at the European Bioinformatics Institute, Public domain, via Wikimedia Commons