English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

When organisms are administered tritiated water (THO), a considerable amount of tritium (T) is retained in their dried tissue and presumably organic compounds in the tissue are universally labeled with T. We reported that brine shrimps, Artemia sauna, reared in the seawater containing THO for a period of 5 days were labeled with T in their lyophilized tissue, up to the level of T content in the tissue corresponded to 30-50% of that in the seawater in terms of specific activity (ƒÊCi of T per hydrogen atom), and also suggested that the radiation effect of THO to brine shrimp is severe on their reproductive capacity9). In this paper, we demonstrate the distribution of T in the whole body of A, sauna, using the technique of autoradiography, and show that the bound form T might be concentrated in maturing eggs in either ovary or ovisac of the shrimps. Dry eggs of A. sauna (imported from Cosmo Enterprise Co. Ltd., Sanders, U.S.A.) were hatched and grown in filtrated natural seawater with and without THO (0.5 mCi/ ml) at 20-25•Ž. Five nauplii (2-3 day old after hatching) were put into cylindrical glass vessels (2.5 cm in diameter) of 20 ml capacity, containing 10 ml of seawater with and without 0.5 mCi/ml THO. Every groups of the shrimps were reared and fed with about 50 mg wet weight of diatoms at every weeks for 2 months. The diatom, Chaetoceros gracilis, were cultured in the Allen-Nelson's medium1), which contains 0.4g of KNO3, 0.05g of Na2HPO4•E12H2O: 0.08g of MgSO4•E7H2O, 0.026 g of CaCl2 and 5 mg each of FeCl3 and sodium ethylenediamine-tetraacetate in ll of filtrated natural seawater without THO. The cells of diatom were harvested at the stationary phase and used for feeding the shrimps. To prepare thin sections of A. sauna for a autoradiography, the shrimps were fixed in the Carnoy's fluid, which consisted of ethanol and acetic acid (3:1). After dehydration with 70, 80, 90% ethanol and absolute ethanol successively, the serial longitudinal sections of the shrimps were made 5 micra at thickness through the ordinary

Distibution of the Bound Form Tritium in the Whole Body of Brine Shrimps, Artemia salina, Reared in the Seawater Containing Tritiated Water