

Figure 231. — Blood from basilic (cubital) vein of a 7-day-old chick. 1,370X. 



A region was selected for drawing that had more than the 

 average number of leukocytes for this number of 

 erythrocytes. 



1-4 Mature erythrocytes. 



.5 Slightly immature thrombocyte. 



6, 7 Mature thrombocyte. 



8 Mature lymphocyte. 



9 Mature monocyte. 



10 Mature heterophil. 



11 Mature basophil. 



Ill 



