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4,483 results for “rat”
Fig. 6 in Variation In The Nucleolar Organiser Regions Of The Long-Tailed Giant Rats (Rodentia, Muridae, Genus Leopoldamys) In Malaysia
Fig. 6. Ag-NOR metaphase of male Leopoldamys ciliatus: NOR not expressed in one member of the metacentric pair.
Figs. 19–30 in Kartika Dewi, Hideo Hasegawa & Mitsuhiko Asakawa (2014) Description of two new species of Syphacia (Nematoda: Oxyuridae) collected from Eropeplus canus (Rodentia: Muridae), an endemic rat of Sulawesi, Indonesia, with proposal of new subgenera. Raffles Bulletin of Zoology 62: 647-654
Figs. 19–30. Syphacia (Segienamsyphacia) yuniae, new species from Eropeplus canus in south Sulawesi, Indonesia. 19, male, holotype, lateral view; 20, cephalic end of male, apical view; 21, midbody in cross section of male; 22, midbody in cross section of male, higher magnification; 23, posterior portion of male, ventral view; 24, posterior portion of male; lateral view; 25, spicule and gubernaculum, lateral view; 26, female, lateral view; 27, cephalic end of female, apical view; 28, midbody in cross section of female; 29, egg; 30, excretory pore and vulva, showing poorly developed vagina
Ecological dataset from: 'Rats and the city: implications of urbanization on zoonotic disease risk in Southeast Asia'
<p>This dataset includes the ecological and environmental data, a description of the analysis steps, and the related R code associated with the manuscript: "Rats and the city: implications of urbanization on zoonotic disease risk in Southeast Asia" by Kim R. Blasdell, Serge Morand, Susan G.W. Laurance, Stephen L Doggett, Amy Hahs, David Perera, and Cadhla Firth, available at: https://www.pnas.org/doi/abs/10.1073/pnas.2112341119</p> <p>This dataset also relates to the preprint: "Rats in the city: implications for zoonotic disease risk in an urbanizing world" available at: https://www.biorxiv.org/content/10.1101/2021.03.18.436089v1</p> <p>A detailed description of the files can be found in README.txt</p>
An analgesic pathway from parvocellular oxytocin neurons to the periaqueductal gray in rats
<p>Raw data set related to the publication "An analgesic pathway from parvocellular oxytocin neurons to the periaqueductal gray in rats". It includes ex vivo electrophysiology, ex vivo GRAB recordings, and neuroanatomy data.</p>
Data for: Population genomics and conservation management of the threatened black-footed tree-rat (Mesembriomys gouldii) in northern Australia
<p>Genomic diversity is a fundamental component of Earth's total biodiversity and requires explicit consideration in efforts to conserve biodiversity. To conserve genomic diversity, it is necessary to measure its spatial distribution and quantify the contribution that any intraspecific evolutionary lineages make to overall genomic diversity. Here, we describe the range-wide population genomic structure of a threatened Australian rodent, the black-footed tree-rat (<em>Mesembriomys</em> <em>gouldii</em>), aiming to provide insight into the timing and extent of population declines across a large region with a dearth of long-term monitoring data. By estimating recent trajectories in effective population sizes at four localities, we confirm widespread population decline across the species' range, but find that the population in the peri-urban area of the Darwin region has been more stable. Based on current sampling, the Melville Island population made the greatest contribution to overall allelic richness of the species, and the prioritisation analysis suggested that conservation of the Darwin and Cobourg Peninsula populations would be the most cost-effective scenario to retain more than 90% of all alleles. Our results broadly confirm current sub-specific taxonomy and provide crucial data on the spatial distribution of genomic diversity to help prioritise limited conservation resources. Along with additional sampling and genomic analysis from the far eastern and western edges of the black-footed tree-rat distribution, we suggest a range of conservation and research priorities that could help improve black-footed tree-rat population trajectories at large and fine spatial scales, including the retention and expansion of structurally complex habitat patches.</p>
Dataset related to: Add-On Cyclic Angiotensin-(1-7) with Cyclophosphamide Arrests Progressive Kidney Disease in Rats with ANCA Associated Glomerulonephritis
<p>The files contain all the dataset included in the manuscript divided by figures.</p> <p> </p> <p>Abstract: Rapidly progressive crescentic glomerulonephritis associated with anti-neutrophil cytoplasmic antibodies (ANCA-GN) is a major cause of renal failure. Current immunosuppressive therapies are associated with severe side effects, intensifying the need for new therapeutic strategies. The activation of Mas receptor/Angiotensin-(1-7) axis exerted renoprotection in chronic kidney disease.<br> Here, we investigated the effect of adding the lanthionine-stabilized cyclic form of angiotensin-1-7 [cAng-(1-7)] to cyclophosphamide in a rat model of ANCA-GN. At the onset of proteinuria,Wistar Kyoto rats with ANCA-GN received vehicle or a single bolus of cyclophosphamide, with or without daily cAng-(1-7). Treatment with cAng-(1-7) plus cyclophosphamide reduced proteinuria by 85% vs. vehicle, and by 60% vs. cyclophosphamide, and dramatically limited glomerular crescents to less than 10%. The addition of cAng-(1-7) to cyclophosphamide protected against glomerular inflammation and endothelial rarefaction and restored the normal distribution of parietal epithelial cells. Ultrastructural analysis revealed a preserved GBM, glomerular endothelium and podocyte structure, demonstrating that combination therapy provided an additional layer of renoprotection. This study demonstrates that adding cAng-(1-7) to a partially effective dose of cyclophosphamide arrests the progression of renal disease in rats with ANCA-GN, suggesting that cAng-(1-7) could be a novel clinical approach for sparing immunosuppressants.</p>
Stowaways Supplement S6. Relative Size Index (RSI) Comparative Dataset & R Code for Mediterranean Ship Rats
<p>Relative size index (RSI) comparative dataset and R code used to compare the RSI <em>sensu </em>Lomolino (1985) of the ship rats from the Ma'agan Mikhael B (MMB) shipwreck with other Mediterranean island populations. </p> <p>Worksheet 1: RSI_Dataframe - data frame used in R to produce RSI bar chart.</p> <p>Worksheet 2: RSI Data - Mainland and island samples' mean condylobasal lengths (CBL) and further calculations used to derive the RSI values per island population.</p> <p>Worksheet 3: CBL values for each Provençal and Corso-Sardinian Islet that was combined in the RSI analysis, taken directly from Granjon & Cheylan (1990).</p> <p>Data sources:</p> <p>MMB - Southern Levant (this study)</p> <p>Galite & Zembra Islands - Tunisia (Ibrahim et al., 2017)</p> <p>Congreso Island - Morocco (Ventura & Lopez Fuster, 2000)</p> <p>São Miguel & Terceira Island (Azores) - Portugal (Ramalhinho et al., 1996)</p> <p>Corsica & Provençal Islets - Provence (Granjon & Cheylan, 1990)</p> <p>Sardinia & Corso-Sardinian Islets - Tuscany (Granjon & Cheylan, 1990)</p>
The Effect of 10% ointment concentration of ethyl acetate subfraction of Meniran (Phyllanthus niruri L.) leaves on excision wound healing in white male rats
<p><strong>Abstract</strong></p> <p><strong>Background: </strong>Wounds are skin problems that are often experienced by humans. Effective wound healing requires a complex arrangement of various healing processes that occur continuously. The plant that has been studied to have a role in the wound healing process is the herbal extract of meniran (<em>Phyllanthus niruri</em> L). This plant can be found in almost all parts of Indonesia. However, biomedical evidence related to the effect of giving meniran (<em>Phyllanthus niruri</em> L) leaves ethyl acetate subfraction ointment preparations is still not revealed yet.</p> <p><strong>Methods: </strong>This study was carried out using experimental animals, a total of 27 rats were divided into 3 large groups, each group consisted of 9 rats, where group 1 was the control based ointment, group 2 was the comparison group (ointment T®) and group 3 was treated with 10% concentration of meniran leaf ethyl acetate subfraction ointment. Each group was observed and measured for three parameters, namely, percentage of wound healing, epithelialization time, and hydroxyproline levels.</p> <p><strong>Results: </strong>From the results of data analysis using one-way (ANOVA) followed by the duncan test (SPSS 23.0) for epithelialization time and hydroxyproline levels, the results showed that 10% concentration of meniran leaf ethyl acetate subfraction ointment, the comparison group (T® ointment) and the control based group with the treatment group on the parameters of epithelialization time and hydroxyproline have levels significant of (p <0.05)</p> <p><strong>Conclusions: </strong>It can be concluded that the ethyl acetate subfraction ointment of meniran leaves with a concentration of 10% is effective in the healing process of the excision wound.</p> <p><strong>Keywords</strong></p> <p><em>Phyllanthus niruri </em>L, wound healing , epithelialization, hidroksiprolin</p>
Figure 9 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 9. Dissected male reproductive accessory sex glands from (a) Paramelomys rubex, (b) Uromys caudimaculatus, and (c) Hyomys goliath. Note large sacculated seminal vesicles in (a) and (b) with coagulating glands on their inner curvatures; H. goliath has rather different gross morphology of seminal vesicles and coagulating glands and strikingly large preputial glands (PG). SV = seminal vesicles, CG = coagulating glands, P = prostate glands, AG = ampullary glands, BU = bulbourethral glands, PG = preputial glands, and DD = ductus deferens. Scale bars a–c = 10 mm.
Figure 8 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 8. Scanning electron micrographs of spermatozoa from (a) Lorentzimys nouhuysi, (b) Mammelomys lanosus, (c) Mammelomys rattoides, (d) Coccymys shawmayeri, (e) Xenuromys barbatus, and (f) Rattus niobe. Scale bars a = 1.5 µm, b–f = 2.5 µm.
Figure 6 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 6. Scanning electron micrographs of spermatozoa from (a) Pseudohydromys pumehanae,(b) Melomys lutillus,(c) Paramelomys platyops, (d) Uromys anak, (e) Uromys caudimaculatus, and (f) Chiruromys lamia. AH = apical hook and VPs = ventral processes of sperm head. Scale bars a = 2 µm, b = 1.3 µm, c = 2 µm, d = 1 µm, e and f = 2 µm.
Figure 3 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 3. Boxplot of relative testes mass (g) for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 7 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 7. Scanning electron micrographs of spermatozoa from (a) Chiruromys vates, (b) Pogonomys loriae with inset a fluorescent LM stained with DAPI showing nucleus, (c) Pogonomys macrourus, (d) Pogonomys sylvestris, (e) Hyomys goliath with arrow indicating ventral spike on sperm head, and (f) Mallomys aroaensis inset fluorescent LM stained with DAPI showing nucleus. AH = apical hook and VPs = ventral processes of sperm head. Scale bars a–d = 0.7 µm, e and f = 1.4 µm.
Figure 4 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 4. Boxplot of maximum sperm tail length (µm) for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 2 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 2. Boxplot showing maximum numbers of fetuses across the species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
Figure 5 in Expanding Population Edge Craniometrics and Genetics Provide Insights into Dispersal of Commensal Rats through Nusa Tenggara, Indonesia
Figure 5. Genetic clustering based on allele frequencies of 12 microsatellite loci genotyped for Rattus rattus Complex samples from MSEA and extralimital distribution in Indonesia (IDN). (A) PCoA, (B) STRUCTURE barplot.
Figure 4. Haplotype network for Rattus rattus Complex II in Expanding Population Edge Craniometrics and Genetics Provide Insights into Dispersal of Commensal Rats through Nusa Tenggara, Indonesia
Figure 4. Haplotype network for Rattus rattus Complex II. The Nusa Tenggara samples are illustrated on the right of the network.
Figure 1 in Expanding Population Edge Craniometrics and Genetics Provide Insights into Dispersal of Commensal Rats through Nusa Tenggara, Indonesia
Figure 1. Cranial measurements taken for each specimen: supraoccipital height (BH), basal length (BLL), basilar length (BRL), length of the bullae (BULL), condylobasal length (CBL), condylobasilar length (CBRL), minimum corpus length (CL), length of the diastema (DA), foramen magnum height (FMH), foramen magnum width (FMW), length of the incisive foramina (FOR), length of the face (GES), length of the braincase (HKL), thickness of the incisor (ID), interorbital breadth (IOB), mandibular diastema length (LAL), thickness lower incisor (LID), mandibular alveoli length (MAL), mandibular toothrow length (crown) (MCL),mandibular depth (MD), maximum mandibular height (MDL), mandibular depth at M1 (MID), mandibular length (ML), nasal length (NAS), nasal breadth (NASB), occipital breadth (OCB), occipital length (OCN), supraoccipital width at the occipital condyles (OCW), length of the upper molar row (alveoli) (OZRA), length of the upper molar row (crown) (OZRK), palatal length (PL), palatine breadth (PRL), rostral breadth (RB), rostral height (RH), breadth of braincase (SKB), height of braincase with bullae (SKH), zygomatic plate (ZP), zygomatic breadth (ZYG).
Figure 3. Haplotype networks for Rattus exulans, R in Expanding Population Edge Craniometrics and Genetics Provide Insights into Dispersal of Commensal Rats through Nusa Tenggara, Indonesia
Figure 3. Haplotype networks for Rattus exulans, R. argentiventer, and Rattus rattus Complex LIV. Sunda refers to the islands of Borneo, Java, and Sumatra; the Indonesian sample (brown) lacks further collection information.
Figure 1 in Reproductive Biology of the Mice and Rats (Family Muridae) in New Guinea-Diversity and Evolution
Figure 1. Boxplot showing nipple numbers for species in the divisions (H) Hydromys, (U) Uromys, (P) Pogonomys, (M) Mallomys, and (R) Rattus.
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.