Using Ad 2/5 E1a-specific primers and the polymerase chain reaction to evaluate DNA recovered from freshly isolated nasal and bronchial epithelium recovered by brushing , E1a sequences were detected in respiratory epithelium of 19 of 91 normals ( 21% ) .
using ad 2/5 e1a-specific primers and the polymerase chain reaction to evaluate dna recovered from freshly isolated nasal and bronchial epithelium recovered by brushing , e1a sequences were detected in respiratory epithelium of 19 of 91 normals ( 21% ) .
O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-other_name I-other_name I-other_name O O O O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-tissue I-tissue O O O O B-multi_cell O O O O