Directions: Mix Hopkins YPD-agar and distilled water well. Autoclave, with stir bar in flask, at 121°C for 20-23 minutes. After autoclaving, stir at room temp. until flask can be handled without gloves. Add G418. Mix well. Pour 25ml per plate. (stripe: 1 orange) MARK BOX: BIO 101 YPD + G418 (final conc. 200ug/ml