QUESTIONS 323 



Resistance. The resistance of the organism to disinfectants is of a 

 very low degree, yet its eradication in an infected vagina is difficult 

 because it penetrates deeply into the tissues of the mucosa. 



QUESTIONS. 



1. What kind of disease is abortus enzooticus of cattle? 



2. To what is it due? Who discovered its microorganisms? 



3. Describe the characteristic pathologic lesions of the affection. 



4. Describe Bang's abortion bacillus as found in the exudate between the 

 uterine mucosa and the fetal membranes. 



5. How is the disease spread under natural conditions? 



6. What animals are susceptible to artificial inoculation? 



7. Describe the morphology of the bacillus of infectious abortion. 



8. Describe the preparation of Stribolt's gelatin-agar-serum mixture. 



9. How does the Bang bacillus grow in it? 



10. What are the relations of the growth of this organism to oxygen ? 



11. Discuss the resistance of the bacillus. 



12. Discuss the diagnosis of the disease. 



13. What is the cause of infectious abortion in mares? Describe the organism. 



14. Describe its cultural properties. 



15. What is the cause of infectious granular vaginitis in cows? 



16. Describe the pathologic lesions in kolpitis granulosa infectiosi bovum. 



17. Why is the disease comparatively resistant to treatment? 



18. Describe the morphologic and cultural properties of the streptococcus of 

 bovine vaginitis. 



