Sertoli cell, Sertoli's cell-elongated cells found in the seminiferous tubules of the testis; apparently they nourish the spermatids. biological science, biology-the science that studies living organisms. plant cell-a cell that is a structural and functional unit of a plant.
The life expectancy of a toilet is more than 100 years. In fact, a study conducted by the National Association of Home Builders determined that toilets can last indefinitely.
In general, the porcelain parts of a toilet can last for many decades, easily over 50 years. The seat and the internal working parts have a much shorter lifespan and will usually work about ten to fifteen years.