Tissue from 10-11 weeks old Sprague Dawley Rats

SIGNALMENT: (age, breed, sex, species, and scientific name) 

Sprague Dawley rats, females

HISTORY:
Groups of female rats, 10-11 weeks old, were exposed to a toxic vapor 6 hrs/day, 5 days/week for 6 weeks. The rats were then observed for 18 months after the end of exposure.


What's Your Diagnosis? Provide your possible etiologies in the comments section. 
Answers will be provided in March.

 

r048a.jpg

2x objective, H&E stain. Overview of the nasal cavity of a rat near the caudal end of the level of the nasopharyngeal duct Nasal mucosa.


r048b.jpg

10x objective, H&E stain. Nasal cavity.


r048c.jpg

10x objective, H&E stain. Nasal cavity.


r048d.jpg

2x objective, H&E stain. Overview of the nasal cavity of a rat at the level of the vomeronasal organ.


r048e.jpg

10x objective, H&E stain. Nasal cavity.


 

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