Results 61 to 70 of about 489,553 (296)

Biological evolution through mutation, selection, and drift: An introductory review

open access: yes, 1999
Motivated by present activities in (statistical) physics directed towards biological evolution, we review the interplay of three evolutionary forces: mutation, selection, and genetic drift.
Baake, Ellen, Gabriel, Wilfried
core   +1 more source

Optimized expression and specific activity of IL-12 by directed molecular evolution [PDF]

open access: yesProceedings of the National Academy of Sciences, 2003
DNA delivery of IL-12 has shown promise in reducing the toxic side effects associated with administration of recombinant human (h)IL-12 protein while maintaining the ability to inhibit tumor growth and abolish tumor metastases in animal models. We have developed a more potent version of IL-12 by using DNA shuffling and screening to improve its ...
Steven R, Leong   +5 more
openaire   +2 more sources

Efficacy and Tolerability of Topotecan/Cyclophosphamide/Dinutuximab in Relapsed and Refractory High‐Risk Neuroblastoma: A Multi‐Institutional Retrospective Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Chemoimmunotherapy with irinotecan, temozolomide, and dinutuximab (I/T/DIN) has emerged as first‐line therapy for relapsed/refractory (r/r) high‐risk neuroblastoma (HRNB) in North America. Topotecan and cyclophosphamide (T/C) are often used in combination with dinutuximab in the setting of lack of response, progression, or incomplete ...
Benjamin J. Lerman   +17 more
wiley   +1 more source

Cryptic genetic variation shapes the adaptive evolutionary potential of enzymes

open access: yeseLife, 2019
Genetic variation among orthologous proteins can cause cryptic phenotypic properties that only manifest in changing environments. Such variation may impact the evolvability of proteins, but the underlying molecular basis remains unclear.
Florian Baier   +9 more
doaj   +1 more source

Partitioning the fitness components of RNA populations evolving in vitro. [PDF]

open access: yesPLoS ONE, 2013
All individuals in an evolving population compete for resources, and their performance is measured by a fitness metric. The performance of the individuals is relative to their abilities and to the biotic surroundings--the conditions under which they are ...
Carolina Díaz Arenas, Niles Lehman
doaj   +1 more source

Origin of symbol-using systems: speech, but not sign, without the semantic urge [PDF]

open access: yes, 2014
Natural language—spoken and signed—is a multichannel phenomenon, involving facial and body expression, and voice and visual intonation that is often used in the service of a social urge to communicate meaning.
Alberts B   +27 more
core   +2 more sources

Clinical Course and Impact of Breaks in Therapy for Children With Relapsed/Refractory Solid Tumors

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pediatric relapsed or refractory (R/R) solid tumors carry a dismal prognosis, and postrelapse patient experiences are not well described. We present postrelapse outcomes, including number of R/R events and subsequent therapy regimens.
Matthew T. McEvoy   +5 more
wiley   +1 more source

Directed evolution and in silico analysis of reaction centre proteins reveal molecular signatures of photosynthesis adaptation to radiation pressure. [PDF]

open access: yesPLoS ONE, 2011
Evolutionary mechanisms adopted by the photosynthetic apparatus to modifications in the Earth's atmosphere on a geological time-scale remain a focus of intense research.
Giuseppina Rea   +8 more
doaj   +1 more source

Surface-Directed Spinodal Decomposition: A Molecular Dynamics Study

open access: yes, 2012
We use molecular dynamics (MD) simulations to study surface-directed spinodal decomposition (SDSD) in unstable binary ($AB$) fluid mixtures at wetting surfaces.
Das, Subir K.   +2 more
core   +1 more source

Transport of fullerene molecules along graphene nanoribbons [PDF]

open access: yes, 2012
We study the motion of C60 fullerene molecules (buckyballs) and short-length carbon nanotubes on graphene nanoribbons. We demonstrate that the nanoribbon edge creates an effective potential that keeps the carbon structures on the surface.
Kivshar, Yuri S., Savin, Alexander V.
core   +2 more sources

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