Detection of STAT3 gene expression of lung tissue with in situ hybridization(ISH) and measurement of the concentration of IL-6 in blood and BALF with radioimmunoassasy.

• 原位杂交法测定肺组织中STAT3的基因表达，放免法检测血和肺泡灌洗液（BALF）中IL-6的浓度，将二者进行相关性分析。