smoker`s lung, histopathology, light micrograph

accumulation anatomical anatomy biology body bronchitis carbon chest cigarette copd diagnose disease eosin health healthcare hematoxylin histology human illness lung magnification man medical medicine micro micrograph microscope microscopic microscopy nicotine organ pathohistology pathology patient photo photomicrograph rendering respiration respiratory rotten science smoker smoking stain system thorax tissue tobacco unhealthy