148 



The Lymphocyte and Lymphocytic Tissue 



23,000 



J2 24 I 2 4 2 4 6 8 10 12 2 4 6 8 10 12 14 16 18 20 21 



^ „- ^ ^ J 



HRS. WKS MOS. YRS. 



Fig. 11-1. Average normal leukocyte count and absolute 

 numbers of circulating leukocytes at various ages. (A) leuko- 

 cyte count; (B) circulating neutrophils; (C) circulating lympho- 

 cytes; (D) circulating monocytes. (From Miale, J. B.: Labora- 

 tory Medicine — Hematology. St. Louis, C. V. Mosby Company, 

 1 958.) 



