tokens: The appearance of the BamHI ZLF-1 gene product , ZEBRA , by RT-PCR , was observed within 8 hr of infection .
folded_tokens: the appearance of the bamhi zlf-1 gene product , zebra , by rt-pcr , was observed within 8 hr of infection .
labels: O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O B-other_name O O O O O O O O O