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STUDENTS HISTOLOGY 



3. Polymorphonuclear neutrophiles (often called polynuclear) . 

 The nuclei are much indented, or even seem to exist as several 

 different parts. They contain immense numbers of fine neutro- 

 phile granules. They constitute the majority of leucocytes sixty- 

 two to seventy per cent. 



4. Eosinophiles, which have polymorphous nuclei and eosino- 



B 



\7 



FIG. 61. MIXING PIPETTES. (CABOT.) 



A. For red blood-corpuscles. It is the one referred to in the text. 



B. For white blood-corpuscles, where the dilution is not so great. Weak acetic acid is used 

 as a diluting fluid, which decolorizes the red corpuscles so that the white corpuscles alone are 



phile granules. They are of great importance in some of the 

 diseases of the blood. The proportion of eosinophiles is from one- 

 half to four per cent.* 



*The percentages given are quoted from Cabot: Clinical Examination of the Blood, to which 

 the student is referred for further information on this subject. 



