title: Isolation and characterization of 2000-bp derivative of pBR322.
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D004262:DNA Restriction Enzymes; D004269:DNA, Bacterial / Q000302:isolation & purification*; D004270:DNA, Circular / Q000302:isolation & purification*; D004926:Escherichia coli / Q000235:genetics*; D010957:Plasmids
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular; D004262:DNA Restriction Enzymes