منابع مشابه
Centriole Engagement: It’s Not Just Cohesin Any More
The belief that cohesin complexes link mother to daughter centrioles has received substantial experimental support. New studies challenge the primacy of cohesin in centriole engagement and provide a more nuanced view into the mechanisms for centriole disengagement in anaphase.
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Multiple meiosis-specific cohesion proteins act to facilitate homolog segregation at the first meiotic division. A recent paper demonstrates that meiotic cohesins can be separated into two complexes, one that establishes and maintains intersister cohesion and one that promotes interhomolog adhesion by regulating synaptonemal complex assembly.
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ISSUES AND PURPOSE School nursing has changed dramatically over the past 25 years. The complex social and physical needs of children require an expanded role with advanced knowledge and skills. The school nurse functions as health promoter, health educator, collaborator, and researcher. Issues related to advanced practice and policy development also affect school nursing practice. CONCLUSIONS...
متن کاملWhen size is not important any more
Wireless phone companies, especially with number portability, sell a product that is less and less different, that is to say, a commodity. That is the reason scale economies play a very important role in this market. Given that it is not possible to make a large margin on the service that they offer, companies must focus their strategies on saving costs. Moreover, the more clients a company has...
متن کاملPharyngeal Chlamydia trachomatis is not uncommon any more.
BACKGROUND The significance of Chlamydia trachomatis (Ct) infection in the pharynx, and possible symptoms, are under discussion. Most studies have involved only homo/bisexual men. We report findings of pharyngeal Ct (PhCt) infections in patients with long-lasting throat discomfort and the prevalence of PhCt in genitally Ct-infected young people in a Swedish primary care setting. METHOD Sub-st...
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ژورنال
عنوان ژورنال: Nature
سال: 1998
ISSN: 0028-0836,1476-4687
DOI: 10.1038/23819