H 



/ ' v^ 7 



FIG. 28. DIAGRAMS ILLUSTRATING SUCCESSIVE STAGES OF MITOSIS. 



A-F, prophase; G, metaphase; H, anaphase; I-J, telophase. a, achromatic 

 spindle; c, centrosome; ep, equatorial plate of chromosomes; if, interzonal fibers; 

 n, nucleolus. (After Wilson.) 



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