<i>Bradypus tridactylus</i> views of the tracheal loop. Jeremy J. Klingler 10.1371/journal.pone.0163348.g011 https://plos.figshare.com/articles/figure/_i_Bradypus_tridactylus_i_views_of_the_tracheal_loop_/3846138 <p>(A) lateral radiograph of the course of the trachea. (B-D) views of the tracheal loop. Tra = trachea; Tra loop = tracheal loop.</p> 2016-09-20 17:40:37 esophagus trachea esophageal displacement mammal