Survivors can be immune to a disease.Logical formLearned from12 sentences. An immune system may be involved.Logical formLearned from12 sentences. An immune system can be in a worm.Logical formLearned from12 sentences. Immune responses can be to infection.Logical formLearned from12 sentences. Diseases may affect an immune system.Logical formLearned from12 sentences. A (protein defensin) can be immune.Logical formLearned from12 sentences. An immune system may attack a virus.Logical formLearned from12 sentences. Persons may weaken immune systems.Logical formLearned from12 sentences. A human-interest story can be immune.Logical formLearned from12 sentences. A tissue can be immune.Logical formLearned from12 sentences. Immune systems can be stressed.Logical formLearned from12 sentences. Opportunities can be in immune systems of a poor.Logical formLearned from12 sentences. Immune systems may pertain-to a poor.Logical formLearned from12 sentences. Proteins can be of presenting for immune attack.Logical formLearned from12 sentences. An immune response may lead to ulcers.Logical formLearned from12 sentences.