Questioning the evidence for Earth's oldest fossils
…, AK Kleppe, MJ Van Kranendonk, JF Lindsay, A Steele… - Nature, 2002 - nature.com
Structures resembling remarkably preserved bacterial and cyanobacterial microfossils from
∼3,465-million-year-old Apex cherts of the Warrawoona Group in Western Australia 1 , 2 , 3 , …
∼3,465-million-year-old Apex cherts of the Warrawoona Group in Western Australia 1 , 2 , 3 , …
SIRT1 transgenic mice show phenotypes resembling calorie restriction
…, MC Motta, E Van Veen, A Czopik, AD Steele… - Aging cell, 2007 - Wiley Online Library
We generated mice that overexpress the sirtuin, SIRT1. Transgenic mice have been
generated by knocking in SIRT1 cDNA into the β‐actin locus. Mice that are hemizygous for this …
generated by knocking in SIRT1 cDNA into the β‐actin locus. Mice that are hemizygous for this …
Comet 81P/Wild 2 under a microscope
The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned
them to Earth for laboratory study. The preliminary examination of these samples shows …
them to Earth for laboratory study. The preliminary examination of these samples shows …
Organics captured from comet 81P/Wild 2 by the Stardust spacecraft
Organics found in comet 81P/Wild 2 samples show a heterogeneous and unequilibrated
distribution in abundance and composition. Some organics are similar, but not identical, to …
distribution in abundance and composition. Some organics are similar, but not identical, to …
Mars' surface radiation environment measured with the Mars Science Laboratory's Curiosity rover
The Radiation Assessment Detector (RAD) on the Mars Science Laboratory’s Curiosity rover
began making detailed measurements of the cosmic ray and energetic particle radiation …
began making detailed measurements of the cosmic ray and energetic particle radiation …
B-cell receptor signaling in chronic lymphocytic leukemia
The B-cell receptor (BCR) is a key survival molecule for normal B cells and for most B-cell
malignancies. Recombinatorial and mutational patterns in the clonal immunoglobulin (Ig) of …
malignancies. Recombinatorial and mutational patterns in the clonal immunoglobulin (Ig) of …
[HTML][HTML] The sample analysis at Mars investigation and instrument suite
…, RV Morris, J Jones, C Gundersen, A Steele… - Space Science …, 2012 - Springer
The Sample Analysis at Mars (SAM) investigation of the Mars Science Laboratory (MSL)
addresses the chemical and isotopic composition of the atmosphere and volatiles extracted …
addresses the chemical and isotopic composition of the atmosphere and volatiles extracted …
Increase in activity during calorie restriction requires Sirt1
D Chen, AD Steele, S Lindquist, L Guarente - Science, 2005 - science.org
Sir2 (silent information regulator 2) is a nicotinamide adenine dinucletide‐dependent
deacetylase required for longevity due to calorie restriction in yeast and Drosophila. In mammals, …
deacetylase required for longevity due to calorie restriction in yeast and Drosophila. In mammals, …
Axonal prion protein is required for peripheral myelin maintenance
…, C Wessig, H Fischer, P Schwarz, AD Steele… - Nature …, 2010 - nature.com
The integrity of peripheral nerves relies on communication between axons and Schwann
cells. The axonal signals that ensure myelin maintenance are distinct from those that direct …
cells. The axonal signals that ensure myelin maintenance are distinct from those that direct …
Mars methane detection and variability at Gale crater
…, T Owen, JL Eigenbrode, DP Glavin, A Steele… - Science, 2015 - science.org
Reports of plumes or patches of methane in the martian atmosphere that vary over monthly
time scales have defied explanation to date. From in situ measurements made over a 20-…
time scales have defied explanation to date. From in situ measurements made over a 20-…