244 



VETLRINARV PATHOLOGY. 



globin and hemochronKjgen, the latter combines with oxygen to 

 form hematin. 



Hemoglobin is liberated from the red blood cells in all condi- 

 tions in which there is rapid destruction of these cells, as in tick 

 fever, anthrax, hemorrhagic septicemia, toxic doses of chlorate 

 of potassitmi, lead poisoning, etc. A portion of the liberated pig- 

 ment is eliminated by the liver and kidne}S, thus excessive quan- 

 tities iif bile and blood\- urine (l:emaglobinuria) are a feature of 

 tick fever, lead poisoning, etc. The liberated hemoglobin not 

 eliminated from the bodv is deposited, especially in the vessel 

 walls, Init ultimateK- diffuses into the lymph and infiltrates prac- 

 tically all tissues. Post-mortem staining is the result of hemo- 

 globin deposition into the dependent tissues. Hemoglobin is 

 also liberated from muscle tissue in azoturia and other diseased 

 conditions of muscle. The hemoglnbin liberated from muscular 

 tissue is disposed of in the same wav as that deri\-ed from red 



V^' 





'A 







Fig:. 12(*. — Haennosulerin rignientation. 



a~ Tubules cnntainint,^ deposits of haerrosiderin in the cells 

 b. Xoimal kidnej- tubules. 



