Results 21 to 30 of about 22,419 (260)

Modeling Photo-Bleaching Kinetics to Create High Resolution Maps of Rod Rhodopsin in the Human Retina. [PDF]

PLoS ONE, 2015
We introduce and describe a novel non-invasive in-vivo method for mapping local rod rhodopsin distribution in the human retina over a 30-degree field. Our approach is based on analyzing the brightening of detected lipofuscin autofluorescence within small
Martin Ehler, Julia Dobrosotskaya, Denise Cunningham, Wai T Wong, Emily Y Chew, Wojtek Czaja, Robert F Bonner   +6 more
doaj   +1 more source

Quantitative Autofluorescence and Cell Density Maps of the Human Retinal Pigment Epithelium [PDF]

Investigative Opthalmology & Visual Science, 2014
Lipofuscin (LF) accumulation within RPE cells is considered pathogenic in AMD. To test whether LF contributes to RPE cell loss in aging and to provide a cellular basis for fundus autofluorescence (AF) we created maps of human RPE cell number and histologic AF.Retinal pigment epithelium-Bruch's membrane flat mounts were prepared from 20 donor eyes (10 ≤
Ach, Thomas, Huisingh, Carrie, McGwin, Gerald, Messinger, Jeffrey, Zhang, Tianjiao, Bentley, Mark, Gutierrez, Danielle B., Ablonczy, Zsolt, Smith, R. Theodore, Sloan, Kenneth R., Curcio, Christine A.   +10 more
openaire   +3 more sources

Human iPSC-Derived Retinal Pigment Epithelium: A Model System for Prioritizing and Functionally Characterizing Causal Variants at AMD Risk Loci

Stem Cell Reports, 2019
Summary: We evaluate whether human induced pluripotent stem cell-derived retinal pigment epithelium (iPSC-RPE) cells can be used to prioritize and functionally characterize causal variants at age-related macular degeneration (AMD) risk loci. We generated
Erin N. Smith, Agnieszka D'Antonio-Chronowska, William W. Greenwald, Victor Borja, Lana R. Aguiar, Robert Pogue, Hiroko Matsui, Paola Benaglio, Shyamanga Borooah, Matteo D'Antonio, Radha Ayyagari, Kelly A. Frazer   +11 more
doaj   +1 more source

Mapping Pigments in a Painting with Low Frequency Electron Paramagnetic Resonance Spectroscopy

Heritage, 2021
An electron paramagnetic resonance (EPR) mobile universal surface explorer (MOUSE) was recently introduced for noninvasively studying paramagnetic pigments in paintings.
Shane McCarthy, Haley Wiskoski, Joseph P. Hornak   +2 more
doaj   +1 more source

Carotenoid Pigment Content in Durum Wheat (Triticum turgidum L. var durum): An Overview of Quantitative Trait Loci and Candidate Genes

Frontiers in Plant Science, 2019
Carotenoid pigment content is an important quality trait as it confers a natural bright yellow color to pasta preferred by consumers (whiteness vs. yellowness) and nutrients, such as provitamin A and antioxidants, essential for human diet.
Pasqualina Colasuonno, Ilaria Marcotuli, Antonio Blanco, Marco Maccaferri, Giuseppe Emanuele Condorelli, Roberto Tuberosa, Roberto Parada, Adriano Costa de Camargo, Andrés R. Schwember, Agata Gadaleta   +9 more
doaj   +1 more source

Molecular insights into the mechanisms of a leaf color mutant in Anoectochilus roxburghii by gene mapping and transcriptome profiling based on PacBio Sequel II

Scientific Reports, 2023
Plants with partial or complete loss of chlorophylls and other pigments are frequently occurring in nature but not commonly found. In the present study, we characterize a leaf color mutant ‘arly01’ with an albino stripe in the middle of the leaf, which ...
Huiming Huang, Hui Zou, Hongting Lin, Yimin Dai, Jiangbo Lin   +4 more
doaj   +1 more source

Fiber-Optic Fluorometer for Microscale Mapping of Photosynthetic Pigments in Microbial Communities [PDF]

Applied and Environmental Microbiology, 2001
ABSTRACT Microscale fluorescence measurements were performed in photosynthetic biofilms at a spatial resolution of 100 to 200 μm with a new fiber-optic fluorometer which allowed four different excitation and emission wavelengths and was configured for measuring phycobiliproteins, chlorophylls, and bacteriochlorophylls.
Thar, Roland Matthias, Kühl, Michael, Holst, Gerhard   +2 more
openaire   +2 more sources

Degradation of emerald green: scientific studies on multi-polychrome Vairocana Statue in Dazu Rock Carvings, Chongqing, China

Heritage Science, 2020
The spontaneous degradation of pigments in painting may occur depending on environment, especially the surrounding condition of high humidity and soluble salts.
Zhimin Li, Lele Wang, Huili Chen, Qinglin Ma   +3 more
doaj   +1 more source

Susceptibility Mapping of Unhealthy Trees in Jiuzhaigou Valley Biosphere Reserve

Remote Sensing, 2023
Jiuzhaigou Valley is recognized as both a world natural heritage site and a biosphere reserve. Conducting research on vegetation health within its scope can provide a demonstration role for sustainable development research.
Sheng Gao, Fulong Chen, Qin Wang, Pilong Shi, Wei Zhou, Meng Zhu   +5 more
doaj   +1 more source

Genetic effects on coat colour in cattle: dilution of eumelanin and phaeomelanin pigments in an F2-Backcross Charolais × Holstein population

BMC Genetics, 2007
Background In cattle, the gene coding for the melanocortin receptor 1 (MC1R) is known to be the main regulator of the switch between the two coat colour pigments: eumelanin (black pigment) and phaeomelanin (red pigment).
Wiener Pamela, Gutiérrez-Gil Beatriz, Williams John L   +2 more
doaj   +1 more source