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422 results for “Cytogenetics”
Fig. 2 in Comparative cytogenetics of Astyanax (Teleostei: Characidae) from the upper Paraguay basin
Fig. 2. Karyotypes of Astyanax abramis (A and B), A. lacustris (C and D) and A. pirapuan (E and F) after Giemsa-stained and showing the distribution of constitutive heterochromatin revealed by C-banding. Insets show Ag-NOR and 18S-bearing chromosomes pairs. Scale bar = 10 µm.
Fig. 3 in Comparative cytogenetics of Astyanax (Teleostei: Characidae) from the upper Paraguay basin
Fig. 3. Metaphase of Astyanax pirapuan after fluorescent in situ hybridization with 18S probe. Arrows indicate the marked chromosomes. Scale bar = 10 µm.
Fig. 3. Karyotypes after FISH with 5S in Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems
Fig. 3. Karyotypes after FISH with 5S rDNA probes (red) and 18S rDNA probe (green). a. Pimelodus absconditus; b. Pimelodus britskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. Scales bar = 10 μm.
Fig. 2. Karyotypes arranged from C-banded chromosomes. a in Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems
Fig. 2. Karyotypes arranged from C-banded chromosomes. a. Pimelodus absconditus; b. Pimelodus britskii; c. Pimelodus maculatus; d. Pimelodus microstoma; e. Pimelodus mysteriosus; f. Pimelodus ortmanni; g. Pimelodus paranaensis. B chromosomes in the boxes. Scales bar = 10 μm.
Fig. 5 in Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems
Fig. 5. Cytogenetics data and phylogenetic relationships between Pimelodidae (modified from Lundberg et al., 2011). N= Neopimelodines; S= Sorubimines; CP= Calophysus-Pimelodus Clade; C = Calophysines; PI = Pimelodus Group; 2n = number diploid; p = short arm; q = long arm; S = simple; M = multiple.
Fig. 3 in A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: a cytogenetic and morphological study
Fig. 3. Micrographs of the ovotestes of Steindachneridion parahybae juveniles in captivity showing the different germ cell types. a) unrestricted spermatogonial testes with anastomosing tubular type, composed by numerous tubules (arrowhead); b) many spermatozoa inside the tubular lumen (arrowhead), separated by interstitial tissue (asterisk); c) gonads section showing perinucleolar oocyte (arrow) close to testicular tissue (arrowhead), containing spermatozoa inside the duct and many intratubular cists; d) ovotestes showing perinucleolar oocyte (arrow) close to spermatozoa inside the duct (arrowhead). Periodic-Acid-Schiff (PAS)/Weigert's Haematoxylin/Metanil Yellow staining. Scale bars: 74 µm (a); 19 µm (b, d); 37 µm (c).
Fig. 4 in A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: a cytogenetic and morphological study
Fig. 4. Karyotype in Giemsa in male (a), detail in (b), in female (c), detail in (d) and in intersex animal (e), detail in (f) of Steindachneridion parahybae from Unidade de Hidrobiologia e Aquicultura, Companhia Energética de São Paulo. See the text for more information about karyotype characteristics. Scale bars: 37 μm (a,c,e); 7,4 μm (b,d,f).
Fig. 2 in A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: a cytogenetic and morphological study
Fig. 2. Micrographs of the testes of Steindachneridion parahybae juveniles in captivity showing the different germ cell types. a) unrestricted spermatogonial testes with anastomosing tubular type, composed by numerous tubules (arrowhead), which contained the germinal compartment (GC, indicate with arrow) and separated by interstitial tissue; b) isolated spermatogonia cell (arrow) surrounded by Sertoli cells (arrowhead), separated by interstitial tissue (asterisk); c) many spermatocytes and spermatids within the cysts (arrowhead), separated by interstitial tissue (asterisk); d) cysts of spermatocytes (arrowhead), separated by interstitial tissue (asterisk); e) cysts of spermatids (arrowhead), separated by interstitial tissue (asterisk); f) many spermatozoa inside the tubular lumen (arrowhead). Periodic-Acid-Schiff (PAS)/Weigert's Haematoxylin/Metanil Yellow staining. Scale bars: 74µm (a); 37 µm (f); 19 µm (c,e); 14 µm (b); 7.4 µm (d).
Fig. 2 in Cytogenetic analysis of Baryancistrus xanthellus (Siluriformes: Loricariidae: Ancistrini), an ornamental fish endemic to the Xingu River, Brazil
Fig. 2. Karyotype of Baryancistrus xanthellus in conventional staining. The square indicates the pair that bears the nucleolus organizer region (NOR).
Fig. 3 in Cytogenetic analysis of Baryancistrus xanthellus (Siluriformes: Loricariidae: Ancistrini), an ornamental fish endemic to the Xingu River, Brazil
Fig. 3. Karyotype of Baryancistrus xanthellus: a) C-banding; b) Mapping of rDNA 18S (red signal) and 5S (green signal) through double FISH.
FIGURE 1 in Contributions to the taxonomy of Trachelyopterus (Siluriformes): comparative cytogenetic analysis in three species of Auchenipteridae
FIGURE 1 | Karyotypes of A. Parauchenipterus striatulus, B. Parauchenipterus galeatus and C. Trachelyopterus coriaceus. Giemsa stained karyotypes. The chromosome pairs marked with silver nitrate are in the boxes; D, E, F. C-banding sequentially karyotypes; G, H, I. Karyotypes hybridized with 5S rDNA and 18S rDNA probes. G. rDNA probe 18S (rhodamine, red signal), 5S rDNA probe (FITC, green signal). H, I. rDNA probe 18S (FITC, green signal), 5S rDNA probe (rhodamine, red signal).
Fig. 5 in Formation Factors Of Cytogenetic Violation Of Rutilus Rutilus (Cypriniformes, Cyprinidae) In Transformed River Ecosystems
Fig. 5. Distribution of revealed nucleus structural breaking down in R. rutilus individuals of different age: (1+) — one-year-old; (2+) — two-year-old; (3+) –three-year-old; (4+) — four-year-old.
Fig. 1 in Formation Factors Of Cytogenetic Violation Of Rutilus Rutilus (Cypriniformes, Cyprinidae) In Transformed River Ecosystems
Fig. 1. Possible versions of micronuclei and nuclear material in erythrocytes of peripheral fish blood: a — micronuclei of "standart" type; b — "attached"; c — "linked to the nucleus with chromatine thread"; d-I — nonformed nuclear material shaped as small sticks; d-II — non-formed nuclear material in the form of clews; e — rounded formations of nuclear material of big enough sizes.
Fig. 4 in Formation Factors Of Cytogenetic Violation Of Rutilus Rutilus (Cypriniformes, Cyprinidae) In Transformed River Ecosystems
Fig. 4. Distribution of revealed structural breaking down of nucleus in R. rutilus selections from representative alignments of transformed river hydrosystems in the north-western region of Ukraine.
Fig. 2 in Formation Factors Of Cytogenetic Violation Of Rutilus Rutilus (Cypriniformes, Cyprinidae) In Transformed River Ecosystems
Fig. 2. Frequency of nuclear violations of R. rutilus peripheral blood erythrocytes in representative alignments of river hydrosystems in the north-western region of Ukraine.
Fig. 3 in Development Stability And Cytogenetic Homeostasis Of Perca Fluviatilis (Perciformes, Percidae) In The Rivers Of Rivne Region
Fig. 3. Comparison of Morphological and Cytogenetic Homeostasis Samples of P. fluviatilis in the Rivers of Rivne Region.
Fig. 1 in Development Stability And Cytogenetic Homeostasis Of Perca Fluviatilis (Perciformes, Percidae) In The Rivers Of Rivne Region
Fig. 1. Frequency of Nuclear Damages of P. fluviatilis Peripheral Blood Erythrocytes in the Rivers in Rivne Region: 1 — Styr River; 2 — Sluch River; 3 — Horyn River; 4 — Ustia River; 5 — Zamchysko River; 6 — Stubelka River; 7 — Ikva River.
Supplementary material 2 from: Steinberg E, Nieves M, Mudry M (2014) Multiple sex chromosome systems in howler monkeys (Platyrrhini, Alouatta). Comparative Cytogenetics 8(1): 43-69. https://doi.org/10.3897/compcytogen.v8i1.6716
Supplementary Figure S. (doi: 10.3897/CompCytogen.v8i1.6716.app2) File format: Microsoft Word file (doc).:
Supplementary material 1 from: Gruber S, Haddad C, Kasahara S (2012) Karyotype analysis of seven species of the tribe Lophiohylini (Hylinae, Hylidae, Anura), with conventional and molecular cytogenetic techniques. Comparative Cytogenetics 6(4): 409-423. https://doi.org/10.3897/compcytogen.v6i4.3945
Giemsa-stained metaphases I. a. Aparasphenodon bokermanni, 2n = 24; b. Itapotihyla langsdorffii, 2n = 24; c. Trachycephalus sp., 2n = 24; d. T. mesophaeus, 2n = 24; e. T. typhonius, 2n = 24; f. Phyllodytes edelmoi, 2n = 22. g. P. luteolus, 2n = 22. Bar = 10 m.
FIGURE 4 in Comparative cytogenetic survey of the giant bonytongue Arapaima fish (Osteoglossiformes: Arapaimidae), across different Amazonian and Tocantins/Araguaia River basins
FIGURE 4 | Metaphase plates of Arapaima gigas from Mamirauá (MAM) population (Amazon River basin) hybridized with repetitive DNA sequences, including mono-, di- and trinucleotide microsatellites and the multigene families U2 snDNA. Bar=5 µm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.