Slideshow of mitosis and meiosis side-by-side. It is a summation of the two processes and the differences between them are clear.

This site provides both illustrations and text to compare and contrast the stages of mitosis with meiosis.

This animation from NOVA: "Battle in the War on Cancer: Breast Cancer" describes how oncogenes cause cancer and how cancerous cells can spread throughout the body.

Animation studio that specializes in medical illustration lets you explore the structure and function of plant cells and animal cells, using videos and interactive graphics with clickable parts that lead to more detail.

This video segment, adapted from the Interactive Secret of Life videodisc, explains the stages of mitosis, the process of dividing equally a cell's massive jumble of DNA just prior to cell division. [1:34]