Results 111 to 120 of about 59,469 (309)

Assessment of the genetic risks of a metallic alloy used in medical implants

open access: yesGenetics and Molecular Biology, 2011
The use of artificial implants provides a palliative or permanent solution for individuals who have lost some bodily function through disease, an accident or natural wear. This functional loss can be compensated for by the use of medical devices produced
Cristiano C. Gomes   +6 more
doaj  

Comparison of nuclear abnormalities in Astyanax bifasciatus Cuvier, 1819 (Teleostei: Characidae) of two sections of rivers from the middle Iguaçu

open access: yesActa Scientiarum: Biological Sciences, 2018
Most changes in water bodies are result of human activities that have the potential to undermine the environmental integrity of aquatic ecosystems. Changes in genetic material can be evidenced by the frequency of nuclear abnormalities in fish blood cells,
Merieli Melo-Silva   +5 more
doaj   +1 more source

Formation of viable cell fragments by treatment with colchicine [PDF]

open access: yes, 1976
Time-lapse cinematography of human fibroblasts revealed that mitotic cells separated into numerous cell fragments containing varying amounts of chromatin and cytoplasm when treated with colchicine.
Abercrombie   +18 more
core   +1 more source

Mesoporous Hollow Carbon Spheres/Nanofibers Anchored With Conductive Bimetallic for Efficient Microwave Absorption

open access: yesRare Metals, EarlyView.
ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang   +10 more
wiley   +1 more source

Chromosomal radiosensitivity of human immunodeficiency virus positive/negative cervical cancer patients in South Africa [PDF]

open access: yes, 2015
Cervical cancer is the second most common cancer amongst South African women and is the leading cause of cancer-associated mortality in this region. Several international studies on radiation-induced DNA damage in lymphocytes of cervical cancer patients ...
Baeyens, Ans   +8 more
core   +2 more sources

To Dye or Not to Dye: Unraveling the Impact of Surface Chemistry on Cerium Oxide Nanoparticles–Cell Interactions

open access: yesSmall Science, EarlyView.
Fluorescent dye labeling enables nanoparticle imaging but may subtly alter their surface chemistry and biological behavior. This study compares dye‐labeled and unlabeled cerium oxide nanozymes, revealing changes in cellular uptake kinetics without affecting their final intracellular fate. Combined fluorescence and label‐free electron microscopy imaging
Kanika Dulta   +3 more
wiley   +1 more source

Germ Line-Specific DNA Sequences are Present on All Five Micronuclear Chromosomes in \u3cem\u3eTetrahymena thermophila\u3c/em\u3e [PDF]

open access: yes, 1983
The development of the macronucleus from the zygotic micronucleus in the ciliated protozoan Tetrahymena spp. involves the elimination of specific DNA sequences (M. C. Yao and M. Gorovsky, Chromosoma 48:1-18 1974).
Karrer, Kathleen M.
core   +1 more source

Assessment of the potential in vivo ecotoxicity of Double-Walled Carbon Nanotubes (DWNTs) in water, using the amphibian Ambystoma mexicanum [PDF]

open access: yes, 2007
Because of their specific properties (mechanical, electrical, etc), carbon nanotubes (CNTs) are being assessed for inclusion in many manufactured products.
Borm PJA   +37 more
core   +3 more sources

Ecotoxicological Evaluation of the Antimicrobial Butylparaben in Edaphic Organisms Using Multiple Biomarkers

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Butylparaben (BuP) recurrently contaminates soils worldwide, mainly by incorporating sewage sludge into cultivated areas, using wastewater in irrigation, and leaching contaminated soils. However, there are few studies on the ecotoxicological effects of this paraben on edaphic organisms.
Lorena Maihury Santos Tsubouchi   +13 more
wiley   +1 more source

In vitro approach to the study of chronic exposure to low doses of x-rays [PDF]

open access: yes, 2011
El presente trabajo fue realizado con el fin de estudiar el efecto de dosis bajas y repetidas de radiación sobre dos líneas celulares de la misma especie. Se desarrolló un modelo in vitro para evitar la influencia de los factores de confusión que afectan
Peral Garcia, Pilar   +2 more
core   +1 more source

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