en.m.wikipedia.org/wiki/Immunolog…
![](https://pbs.twimg.com/media/EaQQYuzUwAEltfF.jpg)
![](https://pbs.twimg.com/media/EaQQasSU4AAMOVL.jpg)
step1.medbullets.com/immunology/105…
![](https://pbs.twimg.com/media/EaQQerZUwAI1ybH.jpg)
nature.com/articles/ni050…
![](https://pbs.twimg.com/media/EaQQifeU0AAovMM.jpg)
quora.com/Can-B-lymphocy…
![](https://pbs.twimg.com/media/EaQQjpYU0AAAgg4.jpg)
(Video is of CAR-T cells, genetically engineered to replace their T cell receptors with little antibody fragments tied to signaling domains so they recognize specific pathogenic cells)