Results 101 to 110 of about 9,778 (229)

Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Lactancia materna e inmunidad: Impacto social

Medisan
El uso y desuso de la lactancia materna ha sido tema controvertido desde épocas remotas, pues se han encontrado biberones de barro en tumbas de niños romanos, lo cual indica que ya en el mundo antiguo se utilizaba la alimentación artificial. Las acciones
Juan Ramón Castillo Belén, Alina Rams Veranes, Alexis Castillo Belén, Raúl Rizo Rodríguez, Armando Cádiz Lahens   +4 more
doaj  

Measles immunity in infants at the time of delivery and 6 months age in Yasouj [PDF]

, 2008
چکیده: زمینه و هدف: سرخک یک عفونت ویروسی حاد، مسری و با قدرت انتشار زیاد است. با وجود کاهش چشم گیر موارد ابتلا بعد از کار برد گسترده واکسن آن، این بیماری در کشورهای در حال توسعه هنوز یک عامل مهم مرگ و میر کودکان به حساب می آید. نوزادان ایمنی بر علیه سرخک
Safari, Mitra., Sharifi, Asghar., Yazdanpanah, Behrouz., Yazdanpanah, Shahrzad.   +3 more
core  

Placental crises: disruptive selection and maternal under‐investment as the foundations of mammalian placental evolution and dysfunction

Biological Reviews, EarlyView.
ABSTRACT Among the vertebrates, mammals are notable for the dominance of live birth and placental nutrition. The structural diversity of the mammalian placenta is remarkable, despite sharing a single common ancestor and conserved physiological functions.
Davis Laundon, Neil J. Gostling, Ian G. Reddin, Bram G. Sengers, Pascale Chavatte‐Palmer, Rohan M. Lewis   +5 more
wiley   +1 more source

Enteropathogen antibody dynamics and force of infection among children in low-resource settings. [PDF]

, 2019
Little is known about enteropathogen seroepidemiology among children in low-resource settings. We measured serological IgG responses to eight enteropathogens (Giardia intestinalis, Cryptosporidium parvum, Entamoeba histolytica, Salmonella enterica ...
Arnold, Benjamin F, Cooley, Gretchen M, Costantini, Veronica, Goodhew, E Brook, Juma, Jane, Lammie, Patrick J, Martin, Diana L, Mkocha, Harran, Morris, Jamae F, Ochieng, John B, Omore, Richard, Priest, Jeffrey W, Vinjé, Jan   +12 more
core  

Fetal Pain Perception: Legislative Assertions and Developmental Neuroscience

Annals of the Child Neurology Society, EarlyView.
ABSTRACT Background Pain perception is a conscious experience, but neither pain nor consciousness is defined in the developing human fetus. Emergent consciousness may be regarded as a phenomenon that ultimately arises from an essential minimum of functional neuronal connectivity. Proposed U.S.
William D. Graf, Timothy M. Crombleholme, Leon G. Epstein, Dawn Gano, Phillip L. Pearl, Timothy V. Salomons, Mark S. Scher, Elise Turk, Klaus‐Peter Zimmer, Harvey B. Sarnat   +9 more
wiley   +1 more source

RSV modelling meeting [PDF]

, 2017
A group of investigators gathered to review the landscape of predictive mathematical modelling of RSV intervention programmes, and to identify gaps in knowledge and strategy options being explored.
Atkins, Katie, Baguelin, Marc, Brand, Samuel, Jit, Mark, Keeling, Matthew James, Kibinge, Nelson, Kinyanjui, Timothy, Medley, Graham, Melegaro, Alessia, Munywoki, Patrick, Nokes, D. James, Pan-Ngum, Wurichada, Panovska-Griffiths, Jasmina, Pellis, Lorenzo, White, Lisa   +14 more
core  

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons, Marc A. Beal, Kerry L. Dearfield, George R. Douglas, Min Gi, B. Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Michelle Kenyon, Alexandra S. Long, David P. Lovell, Anthony M. Lynch, Meagan B. Myers, Stefan Pfuhler, Alisa Vespa, Andreas Zeller, George E. Johnson, Paul A. White   +17 more
wiley   +1 more source

Epigenotoxicity: Decoding the epigenetic imprints of genotoxic agents and their implications for regulatory genetic toxicology

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Regulatory genetic toxicology focuses on DNA damage and subsequent gene mutations. However, genotoxic agents can also affect epigenetic marks, and incorporation of epigenetic data into the regulatory framework may thus enhance the accuracy of risk assessment.
Roger Godschalk, Christopher Faulk, Jessica LaRocca, Jan van Benthem, Francesco Marchetti   +4 more
wiley   +1 more source

Intestinal microbiome alterations in pediatric epilepsy: Implications for seizures and therapeutic approaches

Epilepsia Open, EarlyView.
Abstract The intestinal microbiome plays a pivotal role in maintaining host health through its involvement in gastrointestinal, immune, and central nervous system (CNS) functions. Recent evidence underscores the bidirectional communication between the microbiota, the gut, and the brain and the impact of this axis on neurological diseases, including ...
Teresa Ravizza, Greta Volpedo, Antonella Riva, Pasquale Striano, Annamaria Vezzani   +4 more
wiley   +1 more source