106 BIOLOGY: GENERAL AND MEDICAL 



will be a simple nuclear spindle and the nuclear material 

 being equally divided and drawn toward them, two new 

 nuclei and two new cells will result; if there are four 

 divisions of the centrosome, there will be two nuclear 

 spindles and four new nuclei; if a greater number of divi- 

 sions of the centrosome, a still more complex arrange- 

 ment of spindles and a still greater number of nuclei will 

 be formed. In the sporozoa in which great numbers of 

 minute cells or spores arise through the division of one 

 large one, the chromosome formation and nuclear spind- 

 les are theoretically present but not actually visible. 



In morbid conditions the process of cell division may 

 miscarry in a variety of ways. Thus, in the event of the 

 separation of the nuclear material being imperfect and 

 incomplete, a large lobulated nucleus may be formed; in 

 case the nuclear divisions are completed without accom- 

 panying division of the cytoplasm, giant cells may be 

 formed. 



