Figure 1From: Protection conferred by a recombinant Marek’s disease virus that expresses the spike protein from infectious bronchitis virus in specific pathogen-free chickenIdentification of the transfer vector by restriction enzyme digestion analysis. M: DNA Marker; Lane 1: pUP-S1-DOWN digested with Avr II and Not I; Lane 2: pUP-LTR-EGFP-S1-DOWN digested with Not I; Lane 3: pUP-LTR-EGFP-S1-DOWN digested with Hin d III.Back to article page