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Ctenophores or 'comb-jellies' are marine animals whose relationship to other phyla is uncertain, yet important for understanding major steps in animal evolution. Fossil ctenophores from the Cambrian indicate that ctenophores may have evolved from a sessile, cnidarian-like ancestor.
This article was published in the following journal.
Name: Current biology : CB
The Cambrian explosion is widely seen as evolution's 'big bang', generating a vast diversity of animals in a geological blink of an eye. Two new studies, however, caution against overestimating its ma...
Suicide rates within the military are elevated relative to the general population; however, research suggests that many of the suicide risk factors for military personnel are similar to the suicide ri...
The evolution of multicellularity is a premier example of phenotypic convergence: simple multicellularity evolved independently many times, and complex multicellular phenotypes are found in several di...
Bioarchaeologists interpret skeletal stress as evidence of resilience or frailty, where absence of lesions might result from lack of exposure to pathogens (i.e., good health) or extreme vulnerability ...
The purpose of this study is to compare energy expenditure and metabolic outcomes of a novel seated battle rope protocol to seated maximal ramped upper extremity ergometry protocol in subj...
This trial is referred to as the "umbrella trial". The BATTLE program consists of this umbrella trial plus four phase II protocols into which the umbrella patients are enrolled. Patients ...
The battle of Mosul was characterized by the use of improvised explosive devices, human shields and suicide bombers in an urban setting. It is unclear whether this type of warfare cause mo...
Our objective here is to characterize the viral evolution and viral factors determining HIV virulence, the evolution of the HIV reservoir in PBMC and the co-evolution of anti-HIV CD8 T cel...
The aim of this study was to describe prevalence, radiologic and ultrasound evolution during pregnancy, postnatal evolution and treatment strategy in case of isolated fetal spelnic cyst
The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.
Evolution at the molecular level of DNA sequences and proteins. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
A phylum of primitive invertebrate animals that exemplify a simple body organization. Trichoplax adhaerens is considered a key species for early metazoan evolution.
The techniques used to produce molecules exhibiting properties that conform to the demands of the experimenter. These techniques combine methods of generating structural changes with methods of selection. They are also used to examine proposed mechanisms of evolution under in vitro selection conditions.
Alternatives to the use of animals in research, testing, and education. The alternatives may include reduction in the number of animals used, replacement of animals with a non-animal model or with animals of a species lower phylogenetically, or refinement of methods to minimize pain and distress of animals used.