Figures 125-138.— Normal monocytes. 2,470X. 



PiouRE.s 12.5-131: Variations in size and appearance of 

 ?iormal monocytes. 



125 A typical monocyte. A hyaline mantle extends 

 beyond the reticular portion of the endoplasm. The 

 cytopla.sm is a mixture of azurophilic and (basophilic 

 substances. 



126 Monocyte with well-developed Ilnf, or clear area, 

 filling the nuclear indentation. 



127 Monocyte nucleus but with a nucleocytoplasmic 

 ratio of the lymphocyte. 



128 Deeply indented monocyte nucleus but no Hof. 



129 A type of monocyte frequently seen in smears of 

 avian blood. 



1.30 A monocyte that shows the polychromasia of the 

 cytoplasmic reticulum. 



131 A monocyte having the size and nucleocytoplasmic 

 ratio of the lymphocyte. See table 5, page 71. 



Figures 132-135: Monocytes with numerous azurophilic 

 granules. 



132 Azurophilic granules concentrated on the .side of 

 the nucleus opposite the Hof. 



133 Hof absent. Aziu'ophilic bodies filling most of the 

 cell. 



134 Bilobed nucleus. ."Vzurophilic granules conspicuous 

 against the blue-stained cytoplasm. 



135 .\zurophilic granules larger and more abundant than 

 normal. 



Figures 136-138: Bilobed and double nuclei in monocytes. 



130 Slightly constricted nucleus, similar to the one in 

 figure 134, which is a larger cell. No Hof present 

 in either of these cells. 



137 Nucleus nearly completely constricted. Metachro- 

 matic cytopLasm. A small questionable Hof present. 



138 \ binucleated monocyte. A definite Hof on the 

 upper side in the angle between the nuclei. 



58 



