CORRECTION: What I labeled "CD4+" in the diagram is actually the "TCR," which stands for "T-Cell Receptor." The CD4 glycoprotein is a coreceptor with the TCR, but it's not shown in my diagram.

This is how our bodies learn to identify a new pathogen and develop immunity to that pathogen in the future.

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0:00 Introduction
0:48 A Wild Pathogen Appears!
2:11 Phagocytosis and Presenting the Antigen
3:27 T-Helper Cells
4:29 Humoral Response (B-Cells and Antibodies!)
7:07 Cell-Mediated Response (Killer T-Cells!)
9:18 Recap
11:13 More bad acting...


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Image used:
“6VSB spike protein SARS-CoV-2 monomer in homotrimer” [ Ссылка ], 5-HT2AR, CC0, via Wikimedia Commons

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