AIM To investigate the ruthenium red (RR) staining on the visualizing of ultrastructures of pulmonary surfactant (PS) in injured lungs caused by bleomycin (BLM).

• 目的 观察钌红染色方法对博莱霉素 (BL M)肺损伤早期肺表面活性物质 (PS)的超微结构的效果 .