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datasets available to search
ShareScore release 0.9.0
Dataset results
4 results for “Accurate mass”
Dual-modality imaging of immunofluorescence and imaging mass cytometry for high-resolution whole slide imaging with accurate single-cell segmentation
<p>Imaging mass cytometry (IMC) is a powerful multiplexed tissue imaging technology that allows simultaneous detection of more than 30 makers on a single slide. It has been increasingly used for single-cell based spatial phenotyping in a wide range of samples. However, it only acquires a small, rectangle field of view (FOV) with a low image resolution that hinders downstream analysis. Here, we reported a highly practical dual-modality imaging method that combines high-resolution immunofluorescence (IF) and high-dementional IMC on the same tissue slide. Our computational pipeline uses the whole slide image (WSI) of IF as spatial reference, integrates small FOV IMC into a WSI of IMC. The high-resolution IF images enable accurate single-cell segmentation to extract robust high-dimensional IMC features for downstream analysis. We applied this method in esophageal adenocarcinoma of different stages, identified the single-cell pathology landscape via reconstruction of WSI IMC images and demonstrated the advantage of the dual-modality imaging strategy.</p>
Ultra-Accurate Correlation Between Precursor and Fragment Ions in Two-lDimensional Mass Spectrometry: Acetylated vs. Trimethylated Histone Peptides
<p>Two-dimensional mass spectrometry (2D MS) is a method<br> for tandem<br> mass spectrometry in which precursor and fragment ions are correlated<br> by manipulating ion radii rather than by ion isolation. A 2D mass<br> spectrum contains the fragmentation patterns of all analytes in a<br> sample, acquired in parallel. We report ultrahigh-resolution narrowband<br> 2D mass spectra of a mixture of two histone peptides with the same<br> sequence, one of which carries an acetylation and the other a trimethylation<br> (m/z 0.006 difference). We reduced<br> the distance between data points in the precursor ion dimension and<br> compared the accuracy of the precursor-fragment correlation with the<br> resolving power. We manage to perform label-free quantification on<br> the histone peptide mixture and show that precursor and fragment ions<br> can be accurately correlated even though the precursor ions are not<br> resolved. Finally, we show that increasing the resolution of a 2D<br> mass spectrum in the precursor ion dimension too far can lead to a<br> decline in the signal-to-noise ratio.</p>
Amyloidosis Typing Using Mass Spectrometry-based Proteomics: a New Accurate Tool for Difficult Typing
ClinicalTrials.gov study NCT03984721. IPD Sharing: NO. Countries: 1. Publications: 2.
Mass spectrometric highly selective, sensitive, accurate and precise quantification of species of zinc(II) ion among other transition metal ions based on coordination with glycylhomopentapeptide – a stochastic dynamic approach - experimental dataset
<p>Experimental dataset of mass spectra of Zn<sup>II</sup>-complexes of a glycylhomooligopeptide </p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.