CONCLUSION
There are many different versions of this experience. I chose a simple procedure that can be carried out using materials that are easily found in the home. The exception is Toluidine blue which however can be bought in shops that sell materials for chemical and biological laboratories. Almost all microscopists have this dye or another nuclear colorant. Colouration of the mitotic spindle would also be useful to more fully illustrate the phenomenon of cellular duplication. However, another colorant would be necessary, not blue but instead red or orange. This simple experiment can help give an idea of the complexity, of the precision and of the fascination of the processes that sustain the life of living organisms.