METHOD: Both ELISA and Visual Examination CONDITIONS: Green House - 14h light, 18-22C or 20-29C with light intesity of4-8 Klux METHOD NARR: Mcd were tested for susceptibility and symptom expression to various viruses with PVA beiest. The plants were mechanically inoculated and infection was confirmed using ELISA. AUTHOR EXPLANATION: Mcd is a suitable diagnostic host for PVA.