On Blood- Platelets. 



455 



/ 



N*367 <? 



N? 366 $ 



N°J69 $ 



N°386 1 



4- 6 

 X = EYE LESION 



12 Weeks. 



Fig. 1. — Weight curves and platelet count in six rats kept in the same cage on the same 

 vitamin A-free diet. The figure illustrates the parallelism between the degree of 

 thrombopenia and the general condition of the animals. 



Table to Fig. 1. 



No. of 

 rat. 



Weeks of 

 A deficiency. 



Eed cells. 



Platelets. 



Condition of rat. 



386 



4 



8,720,000 



425,000 



growth. 



387 



4 



7,450,000 



650,000 



Growing rapidly. 



384 



5 



8,320,000 



391,000 



No growth. 



388 



■ -8, • 



8,400,000 



550,000 



Growing. 



384 



9 



6,200,000 



180,000 



\ 3fo growth, thin. 



385 



9 



9,320,000 



390,000 



J Xerophthalmia beginning. 



386 



10 



8,120,000 



217,000 



Looks very ill. Advanced 











xerophthalmia. 



387 



10 



9,880,000 



470,000 



1 Xormal healthy appear- 



389 



10 



8,800,000 



670,000 



J ance. 



