Spindle in an egg cell (IMAGE) Northwestern University Caption Shown are a normal spindle in an egg cell (left) compared to a spindle after removal of the motor protein dynein (right). Microtubules are shown in green, chromosomes are in white, and spindle poles are labeled in magenta. Dynein depletion disrupts proper spindle organization. Credit Sadie Wignall/Northwestern University Usage Restrictions Add credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.