منابع مشابه
Daughter cells share duties
Mitochondrial DNA stays home M itochondria stow their DNA in structures called nucleoids. As Gilkerson et al. reveal, nucleoids are selfi sh and don’t share their DNA with each other. The results might help explain some quirks of mitochondrial inheritance and support a proposed treatment strategy for illnesses caused by defects in the organelles. A nucleoid can house up to 10 copies of a mitoch...
متن کاملDaughter B cells are not created equal
Following the binding of B cell receptors (BCR) to cognate antigens exposed on presenting cells, B cells rapidly spread over antigen-containing surface. During B cell spreading, antigen-BCR microclusters are continually assembled at the periphery of the contact area between the cells. The initial spreading response is followed by a contraction phase, which results in the accumulation of antigen...
متن کاملTumor cells share oncogenic receptors
JCB • VOLUME 181 • NUMBER 4 • 2008 570 Too long for translocation? P eptides that are made too quickly can’t get into the ER, say Asvin Lakkaraju, Katharina Strub (University of Geneva, Switzerland), and colleagues. It seems that the peptides become too long for the translocation machinery to deal with. The signal sequence at the amino terminal of a growing peptide chain is required for translo...
متن کاملMultitasking basal cells: combining stem cell and innate immune duties.
The airway epithelium, which covers the luminal surface of the tracheobronchial tree, is a primary barrier that protects the lung from pathogens, irritants, toxic substances and other stressors present in the ∼10000 L of air flowing through the airways every day. This barrier function is normally mediated by differentiated ciliated and secretory cells strategically positioned in the apical laye...
متن کاملConflicting clinical duties.
The first three articles in the Clinical Ethics section of this issue of Journal of Medical Ethics address potential conflicting duties of physicians. The first paper, by Niklas Juth and Niels Lynöe (see page 215, Editor’s choice), reports results of an empirical study of Swedish physicians’ attitudes regarding the provision of virginity certificates or hymen restorations requested by women, of...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2008
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.1817iti5