Extract DNA from wheat germ! No waiting or taking turns! Designed so a class of 30 students can perform the experiment simultaneously. Wheat germ is ground, the cells are lysed, and cellular contents are released. Extracellular protein is digested by enzyme treatment and heating. The DNA is then spooled on a stirring rod. A hot plate and 70 to 95% alcohol are needed but not included. The Refill contains the perishable materials needed to rerun the experiment.