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Southern blotting hybridization of (A) S. citri BR3-3X, BR3-G, BR3-T, and (B) S. citri BR3-M and BR3-P plasmid preparations to an arp1-derived probe. EcoRI-digested S. citri BR3-3X chromosomal DNA and EcoRI-digested and undigested plasmid preparations from BR3-3X, BR3-G, BR3-T, BR3-M and BR3-P are shown. D, digested with EcoRI; U, undigested. Hybridization in the marker lane is due to presence of short pBluescript vector sequences in the probe.
