Provide materials for teaching microtechnique in preparing squash stain slides and observing all stages of mitosis. The entire procedure can be performed in one laboratory period. Set includes root tips that have been grown and fixed to demonstrate mitotic figures, plastic tissue-treating dishes, microscope slides and cover slips, alcohol/hydrochloric acid solution, macerating blades, aceto orcein stain, tissue transfer brushes, instructions and diagrams. For 30 students. A microscope is required.