mitosis tutorial
http://www.cellsalive.com/mitosis.htm
sketches
http://www.johnkyrk.com/mitosis.html
onion:
http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/activity_description.html
whitefish:
http://www.dmacc.edu/instructors/mitosis.htm
onion pic:
http://www.marric.us/files/images/mitosis.gif
