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  Indian J Med Microbiol
 

Figure 3: A lines are the repetitive horizontal artifacts arising from the pleural line generated by subpleural air, which, either intraalveolar (normal) or abnormal (pneumothorax), blocks ultrasound waves

Figure 3: A lines are the repetitive horizontal artifacts arising from the pleural line generated by subpleural air, which, either intraalveolar (normal) or abnormal (pneumothorax), blocks ultrasound waves