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                                                Trachea, dog - histology slide
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                                                This is a histology slide from a trachea of a dog at 9 dpi, showing normal pseudostratified columnar epithelium lining of the trachea; original magnification ×400. Hematoxylin and eosin (H&E) stain.  
 
Histology slide courtesy of CDC. 
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