Six lessons cover this chapter. Open any of them on its own below, or meet it in place inside chapter 13 of the book. Tick a lesson off once you can predict what it will do before you touch it.
1
The Adaptive Response
Pick an antigen. Watch one lymphocyte get picked out of millions.
2
Helper vs Cytotoxic T Cells
Run an infection. Then drop the CD4 count and watch the whole defense slip.
3
Anatomy of an Antibody
Take the Y apart, switch between the five classes, and run its four jobs.
4
Primary vs Secondary Response
Set a dosing plan. Watch IgM and IgG rise, fade, then surge.
5
The Immunity Grid
Sort ten real cases into the grid. Watch each one's cover switch on and fade.
6
The Vaccine Bench
Open the vial on seven types. See what is inside, and who should skip it.