the hepatitis b surface antigen ( hbsag) gene was isolated from an iranian hbeag positive carrier by pcr. the gene was cloned in puc19 for sequencing and pyes2 for expression in saccharomyces cerevisiae, which pnf1 and pdf3 constructs were made respectively. the sequencing data showed that the isolated hbsag gene shared more than 90% homology with the ayw subtype. the pdf3 was transferred into ...

Convergent phyllotactic patterns shape architectural diversity in land plants. Phyllotaxis is determined by rotating divisions of a single apical cell mosses. 4D division plane orientation rely on geometrical, physical, and biochemical cues. Shared molecular players act at different scales to drive leafy shoot morphogenesis pattern phyllotaxis distantly related plant lineages. Phyllotaxis, the ...