Distribution and virogenic effects of 5-bromodeoxyuridine in synchronized rat embryo cells.

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Distribution and virogenic effects of 5-bromodeoxyuridine in synchronized rat embryo cells.

Rat embryo cell cultures were synchronized by a double thymidine block. The DNA replication phase (S) was divided into an early, middle, and late period. Cell cultures in the early, middle, or late S phase were pulsed with 0.1 muM 5-bromo[(3)H]deoxyuridine (BrdU) or equimolar [(3)H]dT. DNA-DNA reassociation experiments of each sample revealed that [(3)H]BrdU was more concentrated in the interme...

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The Effects of 5-bromodeoxyuridine on Yolk Sac Erythropoiesis in the Chick Embryo

The effects of the thymidine analog, 5-bromodeoxyuridine (BUdR), on the formation of red cells in the yolk sac of the chick embryo were examined. The prospective area opaca vasculosa from a definitive primitive streak embryo was excised, disaggregated, and deposited into a cell clump, and the cell clump was placed in organ culture. Hemoglobin synthesis is detectable after about 16 hr in culture...

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The cellular effect of 5-bromodeoxyuridine on the mammalian embryo.

It is well known that 5-bromodeoxyuridine (BUdR) when injected into pregnant animals may cause exencephaly, cleft palate, and limb abnormalities. Similarly, it is well established that the drug when added to a culture medium may prevent differentiation of embryonic cell systems without affecting cell division or cell viability. The goal of our experiments was to examine whether the congenital m...

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Effects of 5-bromodeoxyuridine on the ACTH-dependent mitochondrial biogenesis in cortical cells of fetal rat adrenals in tissue culture

Cortical cells of fetal rat adrenals in tissue culture were treated with 5-bromodeoxyuridine (BrdU) during their proliferative phase and during ACTH stimulation when nuclear DNA synthesis has almost ceased. Pretreatment with 0.5 mug/ml/day of BrdU inhibited the ACTH-induced differentiation of cortical cells as well as the secretion of corticosterone and 18-OH-deoxycorticosterone (18-OHDOC). Whe...

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coordination of protective schemes in distribution and subtransmission systems including distributed generation

نصب منابع پراکنده در سیستم های توزیع و فوق توزیع علاوه بر مزیت های فراوان، مشکلاتی را هم به همراه دارد. یکی از این مشکلات تأثیر این منابع روی اندازه جریان های اتصال کوتاه است. به طور معمول از حفاظت های مبتنی بر اصل جریان زیاد در سیستم های توزیع و فوق توزیع استفاده می شود. از مهمترین طرح های حفاظتی استفاده شده در فیدرهای توزیع، حفاظت فیوز- ریکلوزر است. همچنین از طرح های حفاظتی جریان زیاد جهتی در...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1975

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.72.5.1829