Results 31 to 40 of about 8,402,765 (253)

Origin of the complex karyotype of the polyploid parthenogenetic grasshopper Saga pedo (Orthoptera: Tettigoniidae)

open access: yesEuropean Journal of Entomology, 2009
Karyotypes of the polyploid parthenogenetic species Saga pedo from four localities in France and the Republic of Macedonia were constructed and compared.
Anne Marie DUTRILLAUX   +5 more
doaj   +1 more source

DNA content variation and its significance in the evolution of the genus Micrasterias (Desmidiales, Streptophyta). [PDF]

open access: yesPLoS ONE, 2014
It is now clear that whole genome duplications have occurred in all eukaryotic evolutionary lineages, and that the vast majority of flowering plants have experienced polyploidisation in their evolutionary history.
Aloisie Poulíčková   +5 more
doaj   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine   +17 more
wiley   +1 more source

Patterns of selective constraints in noncoding DNA of rice [PDF]

open access: yes, 2007
Background Several studies have investigated the relationships between selective constraints in introns and their length, GC content and location within genes. To date, however, no such investigation has been done in plants.
Peter D Keightley   +11 more
core   +1 more source

The effect of environmental factors on total soil DNA content and dehydrogenase activity [PDF]

open access: yesArchives of Biological Sciences, 2015
The aim of the study was a statistical evaluation of the impact of selected soil factors − water potential (pF), total organic carbon content (TOC) and land use − on the total DNA content and dehydrogenase activity (DHA) in Mollic Gleysol ...
Wolinska Agnieszka   +2 more
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani   +7 more
wiley   +1 more source

New Estimation of Genome Size in the Highly Diverse Genus Begonia

open access: yesJournal of the American Society for Horticultural Science
Begonia is one of the most diverse plant genera, native to tropical and subtropical regions worldwide. Throughout its long cultivation history, Begonia has become widely spread across the Americas, Asia, and Africa.
Jinjin Song   +8 more
doaj   +1 more source

Nuclear DNA content in 20 species of Siluriformes (Teleostei: Ostariophysi) from the Neotropical region

open access: yesGenetics and Molecular Biology, 2004
In the present study, 20 species of Siluriformes fish were analyzed in order to determine their nuclear DNA content and compare these data with their diploid number.
Paulo César Fenerich   +2 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Cell-free DNA in the circulation as a non-invasive biomarker for breast cancer [PDF]

open access: yes, 2013
Breast cancer remains the most common cancer among women worldwide. Although standard screening methods such as clinical breast examination (CBE) and Full-Field Digital Mammography (FFDM) are non-invasive itself, their sensitivity and specificity is ...
Kohler, Corina
core   +1 more source

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