Dec. 1, 1925 
Inactivation of Vitamin A by Rancid Fat 
1019 
of the two animals, the count being 8,825,000 per cubic millimeter 
for rat No. 5 and 8,825,000 to 9,025,000 per cubic millimeter for rat 
No. 10. 
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Post-mortem examinations of rats Nos. 5 and 6 of the rancid series 
and of rats Nos. 7 and 10 of the control group yielded the following 
results: 
Eat No. 6 .—Practically no mesenteric or kidney fat. No noticeable conges¬ 
tion of mucous membrane of stomach or intestines. Slight congestion of mes¬ 
enteric blood vessels. Mucous membrane of alimentary tract pale and unhealthy 
in appearance as compared with that of the controls. The same was true as to 
tissues in general. The general picture was that of undernutrition. 
Rat No. 5 .—Similar in condition to rat No. 6, except that there was even less 
visible fat and that the tissues appeared to be in a poorer state of nutrition. No 
congestion apparent. 
