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.
New, High Efficiency Toilets (HETs) use 1.3 gallons (5 liters) per flush (gpf). With an HET, a family of four will use approximately 9,000 gallons (34 m3) per year in total toilet water use. Look for the WaterSense label to ensure your new toilet has maximum efficiency and high performance.