منابع مشابه
Sea Squirt Sex
I f you spend a minute observing behaviour at your next party, it is easy to grasp the basics of sexual selection theory females are choosy and males compete. But how do you choose or compete for the best partner when you are permanently stuck to a rock? Most marine organisms reproduce by releasing their eggs and sperm into the ocean. This mode of reproduction is called broadcast spawning. You'...
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In the present study we explore material architectures that lead to enhanced dissipation properties by taking advantage of squirt-flow a local flow mechanism triggered by heterogeneities at the pore level. While squirt-flow is a known dominant source of dissipation and seismic attenuation in fluid saturated geological materials, we study its untapped potential to be incorporated in highly defor...
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Using the Seldinger technique in a percutaneous femoral approach, a 7 French sidewinder femorocerebral catheter is advanced over a movable-core safety J guide wire [2] to the aortic arch , where catheterization of the left carotid is attempted initially by the conventional open-loop method with withdrawal hooking of the arterial orifice . When difficulty is encountered , the following technique...
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Lonidamine (LND) is a new anti-cancer drug which interferes with the energy-yielding processes of tumour cells without affecting DNA replication. A total of 69 previously untreated patients with non-small cell lung cancer (NSCLC) entered this study. LND was given orally as a single agent at doses ranging from 450 to 900 mg day-' until tumour progression (2 to > 1,402 days). Partial responses (P...
متن کاملIdentification and characterization of sea squirt telomerase reverse transcriptase.
Telomerase is essential for maintaining telomere length and chromosome stability in most eukaryotic organisms. The telomerase ribonucleoprotein complex consists of two essential components, the catalytic telomerase reverse transcriptase protein (TERT) and the intrinsic telomerase RNA. The sea squirts, as urochordates, occupy a key position in the phylogenetic tree of the chordates: they diverge...
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ژورنال
عنوان ژورنال: Nature Medicine
سال: 2001
ISSN: 1078-8956,1546-170X
DOI: 10.1038/90920