The same arrangement of positively and negatively acting sequences has been conserved in the mammalian Pax-2 and Pax-8 , the zebrafish Pax-b as well as the sea urchin Pax-258 proteins .
the same arrangement of positively and negatively acting sequences has been conserved in the mammalian pax-2 and pax-8 , the zebrafish pax-b as well as the sea urchin pax-258 proteins .
O O O O O O O O O O O O O O B-DNA_domain_or_region B-DNA_domain_or_region O B-DNA_domain_or_region O O B-multi_cell O O O O O B-multi_cell I-multi_cell O O O