05:28duration 5 minutes 28 seconds
Ch 21 VIII - CD4 and CD8 Cells
Ch 21 objectives 32-33.
11:48duration 11 minutes 48 seconds
Ch 21 VII - T Cell Activation
Ch 21 objective 31.
15:00duration 15 minutes 0 seconds
Ch 21 VI - MHC Molecules
Ch 21 objectives 29-30.
17:34duration 17 minutes 34 seconds
Ch 21 III - Cells of the Adaptive Immune System
Ch 21 objectives 20-22.