منابع مشابه
Telomeres
What are they? Telomeres are the natural tips of chromosomes. They consist of tandem arrays of simple G-rich repetitive DNA sequences that are complexed with proteins. The fundamental tools for keeping telomeres healthy are amazingly similar in both single cell eukaryotes, such as yeast and ciliated protozoa, and human cells. What do they do? Telomeres have two important duties. First, they are...
متن کاملTo Rb or not to Rb
chicken chemokine can help heal wounds by inducing fibroblasts to become myofibroblasts, according to results reported by Feugate et al. on page 161. The contractile myofibroblasts help close the wound by pulling together the necessary cells and matrix. Chemokines are better known for their activities in the immune system, but increased production of chicken chemotactic and angiogenic factor (c...
متن کاملSympathetic cooling of 85 Rb and 87 Rb
We demonstrate sympathetic cooling between magnetically trapped 85Rb and 87Rb atoms. Up to 6!106 85Rb atoms are cooled via elastic collisions with a reservoir of 8!108 87Rb atoms. The temperature of the binary atomic ensemble is adjusted by using radio-frequency evaporation of 87Rb. Temperatures as low as T "100 nK have been realized in the binary ensemble. Through a cross-dimensional mixing ap...
متن کاملTelomeres and telomerase.
Telomeres are the protective DNA-protein complexes found at the ends of eukaryotic chromosomes. Telomeric DNA consists of tandem repeats of a simple, often G-rich, sequence specified by the action of telomerase, and complete replication of telomeric DNA requires telomerase. Telomerase is a specialized cellular ribonucleoprotein reverse transcriptase. By copying a short template sequence within ...
متن کاملTelomeres and mitochondrial function.
A new study provides insight into aging and agerelated diseases by linking telomere dysfunction to a decline in mitochondrial number and function. Common observation, bolstered by a wealth of epidemiologic evidence, demonstrates that aging is accompanied by a profound increase in the incidence of cardiovascular disease. Understanding the mechanisms that underlie the aging process might, therefo...
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ژورنال
عنوان ژورنال: Genome Biology
سال: 2002
ISSN: 1465-6906
DOI: 10.1186/gb-spotlight-20021018-01