1. The Spindle Gets Bigger
Kenneth E Sawin 
Cell 
Volume 117, Issue 3, Pages (April 2004)
DOI: /S (04)

2. Figure 1
Drawings from E.B. Wilson's 1896 Edition of “The Cell in Development and Inheritance”
Shown at left is a cell in which centrosomes are well separated prior to nuclear envelope breakdown (NEBD) during mitosis. At right is a cell in which NEBD precedes extensive centrosome separation. According to Wilson, cases of the former include “many plant cells and cleavage-stages of many eggs,” while cases of the latter include “epidermal cells of salamander and formation of the polar bodies.”
Cell  , DOI: ( /S (04) )