A risk can be constituted-of-or-filled-with tumors.Logical formLearned from19 sentences. A location may pertain-to tumors.Logical formLearned from18 sentences. A (nerve sheath tumor) can be malignant.Logical formLearned from18 sentences. (Liver tumors) can be malignant.Logical formLearned from18 sentences. Cells may form tumors.Logical formLearned from18 sentences. Tumors can be in lungs.Logical formLearned from18 sentences. Tumors can be experimental.Logical formLearned from18 sentences. A site may pertain-to a primary tumor.Logical formLearned from18 sentences. A tumor can be low-grade.Logical formLearned from18 sentences. Some proteins of an immune system may promote (tumor growth).Logical formLearned from18 sentences. An immune response can be to a tumor.Logical formLearned from18 sentences. A (protein c5a) may be produced during an immune response to a tumor.Logical formLearned from18 sentences. Doctors may remove a tumor.Logical formLearned from18 sentences. Tumor may undergo a removal.Logical formLearned from18 sentences. Tumors may build shields.Logical formLearned from18 sentences.