Exp Cell Biol 1984 Jan 01;525:333-8.

Regional distribution of polyadenylated mRNA in Xenopus laevis embryos.

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Xenopus laevis embryos were dissected into dorsal and ventral regions in post-gastrula stages. Polyadenylated and nonpolyadenylated ribonucleic acids were separated on oligo (dT) cellulose and translated in vitro. The radioactivity incorporated into the translation products directed by polyadenylated and nonpolyadenylated messenger ribonucleic acids shows that in the dorsal region most proteins are synthesized on polyadenylated messenger ribonucleic acid templates in all the stages, while in the ventral region the major templates seem to be, until the neural fold stage, nonpolyadenylated messenger ribonucleic acids. Later the polyadenylated messenger ribonucleic acid activity there too increases.

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