An immune system may undergo a decline.Logical formLearned from5 sentences. Immune tolerance may undergo a development.Logical formLearned from5 sentences. An immune system may overreact to particles.Logical formLearned from5 sentences. A child may be born immune to a virus.Logical formLearned from5 sentences. Immune systems may undergo a development.Logical formLearned from5 sentences. An immune system can be a line of defense.Logical formLearned from5 sentences. An immune system may manifest robustness.Logical formLearned from5 sentences. Social programs can be immune from cutbacks.Logical formLearned from5 sentences. Computers can be immune to viruses.Logical formLearned from5 sentences. A government can be immune from the economy.Logical formLearned from5 sentences. A mushroom may strengthen an immune system.Logical formLearned from5 sentences. (Stress hormone levels) may weaken an immune system.Logical formLearned from5 sentences. Stress may affect immune responses.Logical formLearned from5 sentences. Genes may affect immune responses.Logical formLearned from5 sentences. A (bedliner material formula) can be immune to effects of (ultraviolet radiation).Logical formLearned from5 sentences.