Figure 2. Comparison of only linear (curve 1, v =1.0) T-helper activity decrease with non-linear (standard curve 2, v = 1.6). *CD4+ cell observed values are depicted as circles and those of CD8+ lymphocytes as squares. Both simulated and observed values are depicted as a percentage of normal CD4+ lymphocyte numbers (the normal value of CD8+ lymphocytes is thus 66.7%).
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