question: Which portions of the immune system can be safely removed in these emergency cases ?
answer: thymus , spleen , bone marrow , lymph nodes and other lymphatic tissues
turker_answer: Thymus , spleen , bone marrow , lymph nodes , and other lymphatic tissues can be safely removed in these emergency cases .
rule-based: Thymus , spleen , bone marrow , lymph nodes and other lymphatic tissues can be safely removed in these emergency cases .