## Abstract A method is reported for inducing parthenogenetic development in eggs of the sea urchin __Lytechinus pictus__, a species which previously could not be artificially activated. NH~4~OH or the calcium ionophore A23187 are used as activating agents followed by hypertonic treatment. The iono
The incorporation of P32 into the nucleoproteins and phosphoproteins of the developing sea urchin embryo
β Scribed by Villee, C. A. ;Lowens, M. ;Gordon, M. ;Leonard, E. ;Rich, A.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1949
- Tongue
- English
- Volume
- 33
- Category
- Article
- ISSN
- 0095-9898
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In Xenopus and Drosophila, the nucleocytoplasmic ratio controls many aspects of cell-cycle remodeling during the transitory period that leads from fast and synchronous cell divisions of early development to the slow, carefully regulated growth and divisions of somatic cells. After the fifth cleavage
Control and y-irradiated sea urchin (Arbacia punctulata) eggs were incubated with H"1eucine. No incorporation of the amino acid into the proteins of most unirradiated eggs was detectable by autoradiography. All irradiated eggs incor-. porated the amino acid and the amount of autoradiographic labelli
## Abstract The evolution of development can be made accessible to study by exploiting closely related species that exhibit distinct ontogenies. The directβdeveloping sea urchin __Heliocidaris erythrogramma__ is closely related to indirectβdeveloping sea urchins that develop via a feeding larval st
## Abstract Sea urchin embryos of the species Paracentrotus lividus were treated continuously with different concentrations of allβtrans retinoic acid (RA) or dimethylsulfoxide (DMSO) at different developmental stages. A delay in embryonic development was observed when embryos were cultured in the