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340 results for “Protozoa”
FIGURE 1 in Morphology and infraciliature of the oligotrich ciliate Strombidium rapulum (Yagiu, 1933) Kahl, 1934 (Protozoa, Ciliophora, Oligotrichida) from the intestine of sea urchin Hemicentrotus pulcherrimus Agassiz
FIGURE 1. Strombidium rapulum from live cells (A, B, D, E–G) and after protargol impregnation (C, E, H, I). (A) Ventral view of a representative specimen, arrowheads mark the cilia of ventral kinety. (B) To show the creeping state, note the cell attached to the substrate with its adoral membranelles. (C) To demonstrate variations in macronucleus shape. (D) Swimming trace. (E) Apical view of the buccal apparatus, arrowheads note argentophilic fibres. (F, G) Ventral view of specimens (from Yagiu 1933 and Poljansky 1951, respectively). (H,I) Ventral and dorsal view of same specimen, to show the infraciliature, arrowhead in H marks the pharyngeal fibres. AM = anterior membranelles; AP = apical protrusion; EM = endoral membrane; GK = girdle kinety; Ma = macronucleus; VK = ventral kinety; VM = ventral membranelles. Scale bars in (A, G–I) = 40 µm, in (F) = 50 µm.
FIGURE 1. Brooklynella sinensis n in Description of a new marine cyrtophorid ciliate, Brooklynella sinensis n. sp. from the China Sea with a new definition of the genus Brooklynella (Protozoa, Ciliophora, Cyrtophorida)
FIGURE 1. Brooklynella sinensis n. sp. (A–H) and B. hostilis (I, from Lom & Nigrelli, 1970) from live cells (A), after protargol (B–G, I) and ChattonLwoff impregnation (H). (A) Ventral view of a typical individual. (B, C) Ventral (B) and dorsal views (C) of infraciliature, arrow indicates posterior ends of postoral kineties. (D, E, F) Ventral views of individuals in early (D), middle (E) and later (F) stages of morphogenesis; arrow in (D) marks the three postoral kineties in multiplication; arrow in (E) notes the basal bodies that will involve the formation of nematodesmal rods; in (F) arrow indicates the three dikinetidal rows which will form the new oral kineties and doublearrowheads mark cytostome in the opisthe. (G) Right side view of a specimen. (H) Silverline system on dorsal side. (I) Infraciliature. CVP = contractile vacuole pore; Cy = cyrtos; EF = equatorial fragment; Ma = macronucleus; P = podite; TF = terminal fragment. Scale bar = 20
FIGURE 2 in Morphology and infraciliature of the oligotrich ciliate Strombidium rapulum (Yagiu, 1933) Kahl, 1934 (Protozoa, Ciliophora, Oligotrichida) from the intestine of sea urchin Hemicentrotus pulcherrimus Agassiz
FIGURE 2. Microphotographs of Strombidium rapulum from live cells (A–D, F), after Methylgreen Pyronine staining and protargol impregnation (G–K). (A) A typical individual, arrowheads indicate lightreflecting granules in the cytoplasm while arrow marks the tail. (B) A slightly pressed specimens, to show lightreflecting granules in the cytoplasm (arrowheads). (C) Dorsal view, to show the protrusion between anterior membranelles (arrowheads). (D) To show details of the tail (arrow). (E) Ventral view, arrowhead marks the macronucleus. (F) Apical view, to show the apical protrusion (arrow). (G) Ventral view, to show the buccal apparatus. (H) Details of the anterior membranelles, arrowheads demonstrate the argentophilic fibres. (I) Ventral view, arrowheads indicate the girdle kinety, which is composed of monokinetids. (J) To show the ventral kinety (arrowheads). (K) Lateral view, to show the macronucleus. Scale bars = 60 µm.
FIGURES 10–23 in A new pleurostomatid ciliate, Amphileptus salignus n. sp. (Protozoa, Ciliophora), from mangrove wetlands in southern China
FIGURES 10–23. Photomicrographs showing the morphology of Amphileptus salignus n. sp. from living cells (10–11, 16–22) and after protargol impregnation (12–15, 23). (10) Right view of a typical individual, arrows mark the extrusomes, arrowheads mark the contractile vacuoles. (11) Left view, arrowheads mark the longitudinal ridges. (12) To show the oral structure, arrowheads mark perioral kinety 1, arrow marks perioral kinety 2. (13) To show the nematodesmata (arrowheads). (14) Left view of anterior portion, arrows show the dorsal brush. (15) The distribution of macronuclear nodules (arrows) and long extrusomes (arrowheads). (16, 17) Two kinds of extrusomes, arrowheads show the shorter ones, arrows show the longer ones. (18) Cortical granules (arrowhead). (19) To show the contractile vacuoles, arrowhead marks the one positioned near the dorsal side. (20) To show dorsal cilia (arrowheads) and dorsal brush (arrow). (21) Anterior region of cell, arrowheads point to the shorter extrusomes. (22) Mid-region of cell, arrowheads indicate the shorter extrusomes. (23) To show the longer extrusomes. Scale bars in (10, 11)—100 µm, in (16, 17)—20 µm.
FIGURES 1–9. Amphileptus salignus n in A new pleurostomatid ciliate, Amphileptus salignus n. sp. (Protozoa, Ciliophora), from mangrove wetlands in southern China
FIGURES 1–9. Amphileptus salignus n. sp. from living cells (1–5) and after protargol impregnation (6–9). (1) Right view of a typical specimen with pointed posterior end. (2) Two kinds of extrusomes. (3) Cortical granules distributed between ciliary rows. (4) Left views, to show variations in body shape and in the number and distribution of contractile vacuoles. (5) Left view, note the dorsal brush. (6) Left-ventral view showing the detailed structure around the cytostome including the well-developed nematodesmata. (7–8) Infraciliature of right (7) and left (8) sides of the same specimen, arrows in Fig. 7 mark the suture. (9) Macronuclear nodules and distribution of the longer extrusomes, the shorter kind of extrusomes were not observed after protargol impregnation. CV: contractile vacuole, DB: dorsal brush, Ex: extrusome, Ma: macronuclear nodules, PK1–2: perioral kineties 1 and 2. Scale bars in (1, 4)—100 µm, in (2) – 10 µm, in (7, 8)—80 µm.
Figure 2 in Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea
Figure 2. Parallelostrombidium ellipticum sp. nov. from life (A–F, J–R) and after protargol impregnation (G–I, S–Y). A, J, ventral views of typical specimen. B, L, dorsal views, arrowhead marks the extrosomes. C, P, detail views of the polygonal platelets. D, resting extrusomes. E, swimming trace. F, K, fat individual. G, pattern of somatic ciliature. H, I, ventral (H) and dorsal (I) views showing the ciliary pattern and the macronucleus. M, Q, apical views, arrows mark the thigmotactic membranelles. N, ventral view of anterior portion of cell, arrow marks the apical protrusion. O, detail of extrusomes attached above the girdle kinety, arrowheads mark the cilia of girdle kinety. R, S, posterior portion of cell, showing the distribution of extrusomes (arrowheads). T, detail view of the dikinetids in girdle kinety. U, Y, right lateral views to show the posterior portion of ventral and girdle kineties. V, ventral view showing the somatic kineties and the macronucleus. W, ventral views of anterior cell portion, to show the adoral zone of membranelles. X, detail of the oral primordium (arrow) in the early stage dividers. AM, anterior membranelles; E, extrusomes; EM, endoral membrane; GK, girdle kinety; Ma, macronucleus; TM, thigmotactic membranelles; VK, ventral kinety; VM, ventral membranelles. Scale bars: 100 μm (E); 30 μm (A, B, F–M, Q); 20 μm (N, R, S, U–W); 5 μm (C, D, O, P, T, X, Y).
Figure 4 in Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea
Figure 4. Maximum likelihood (ML) tree inferred from small subunit (SSU) rRNA gene sequences indicating the phylogenetic positions of Parallelostrombidium obesum, Parallelostrombidium ellipticum, and Strombidium tropicum (orange dots). Numbers at the nodes represent support values in the following order: ML bootstrap values and Bayesian inference (BI) posterior probabilities. Nodes absent from one of the two phylogenies are indicated by a hyphen. The scale bar indicates the number of substitutions per ten nucleotides.
Figure 1 in Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea
Figure 1. Parallelostrombidium obesum sp. nov. from life (A–E, I–R) and after protargol impregnation (F–H, S–V). A, ventral view of typical specimen. B, I, J, different body shapes, arrow marks the apical protrusion. C, swimming trace. D, P, pattern of cortical platelets. E, O, Q, detail of extrusomes attached above the girdle kinety. F, pattern of somatic ciliature. G, H, ventral (G) and dorsal (H) views of the same specimens showing the ciliary pattern and the macronucleus. K, lateral view. L, N, ventral (L) and dorsal (N) views showing the distribution of extrusomes (arrowheads). M, two thigmotactic membranelles. R, detail of bases of thigmotactic membranelles (arrows). S, V, ventral views of anterior portion of cell showing oral membranelles. T, U, dorsal (T) and ventral (U) views showing the girdle and ventral kineties. AM, anterior membranelles; E, extrusomes; EM, endoral membrane; GK, girdle kinety; Ma, macronucleus; TM, thigmotactic membranelles; VK, ventral kinety; VM, ventral membranelles. Scale bars: 120 μm (C); 40 μm (A, B, F–K); 20 μm (L–N, S–V); 10 μm (D, E, O–R).
Figure 3 in Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea
Figure 3. Strombidium tropicum sp. nov. from life (A–D, J–P) and after protargol impregnation (E–I, Q–V). A, ventral view of a representative specimen. B, J–L, different body shapes, arrow marks the apical protrusion. C, P, resting extrusomes. D, swimming trace. E, detail of dikinetids, arrow and arrowhead mark the argyrophilic fibres associated with dikinetids in girdle and ventral kineties, respectively. F, detail of ventral membranelles and argyrophilic fibres. G–I, ventral (G, H) and dorsal (I) views showing the ciliary pattern and the macronucleus, arrow marks the argyrophilic fibres associated with adoral membranellar zone and arrowhead notes the pharyngeal fibres. M, ventral view of a mid-divider, arrow shows the oral primordium. N, apical view showing the adoral zone of membranelles. O, dorsal view showing the distribution of extrusomes (arrow). Q, the macronucleus. R, U, ventral views of adoral zone of membranelles, arrow marks the argyrophilic fibres. S, V, ventral and dorsal views of posterior portion of cells to show the infraciliature, arrow marks the extrosomes and arrowhead notes the hemitheca. T, detail of girdle kinety, arrow shows the argyrophilic fibres and arrowhead marks the cilium. AM, anterior membranelles; E, extrusomes; EM, endoral membrane; GK, girdle kinety; Ma, macronucleus; VK, ventral kinety; VM, ventral membranelles. Scale bars: 50 μm (D); 10 μm (A, B, G–L, N, O, Q), 5 μm (C, F, M, P, R, S, U, V), 2 μm (E, T).
FIGURE 5. Thurstonia nilotica n in Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon)
FIGURE 5. Thurstonia nilotica n. sp. A. General morphology after double staining by DAPI (blue) and immunofluorescence microscopy (IF) using FITC-conjugated anti-tubulin antibody (green); B. General morphology (Drawings after silver staining); C. Ciliature of the upper face; D. Ciliature of the lower face; BA. Buccal Apparatus; Ma. Macronucleus; Mi. micronucleus; Su. Sucker. Scale bar: 20 μm.
FIGURE 4. Thurstonia emini n in Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon)
FIGURE 4. Thurstonia emini n. sp. A. General morphology after double staining by DAPI (blue) and immunofluorescence microscopy (IF) using FITC-conjugated anti-tubulin antibody (green); B. General morphology (Drawings after silver staining); C. Ciliature of the upper face; D. Ciliature of the lower face; BA. Buccal Apparatus; Ma. Macronucleus; Mi. micronucleus; Su. Sucker. Scale bar: 20 μm.
FIGURE 2. Preptychostomum donendaensis n in Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon)
FIGURE 2. Preptychostomum donendaensis n. sp. A. General morphology after double staining by DAPI (blue) and immunofluorescence microscopy (IF) using FITC-conjugated anti-tubulin antibody (green); B. General morphology (Drawings after silver staining); C. Ciliature of the upper face; D. Ciliature of the lower face; BA. Buccal Apparatus; Ma. Macronucleus; Mi. micronucleus; Su. Sucker. Scale bar: 20 μm.
FIGURE 3. Proptychostomum gigas n in Four new species of Hysterocinetida (Protozoa: Ciliophora) from the digestive tract of earthworms collected to the lower Nyong estuary (South Coast, Cameroon)
FIGURE 3. Proptychostomum gigas n. sp. A. General morphology after double staining by DAPI (blue) and immunofluorescence microscopy (IF) using FITC-conjugated anti-tubulin antibody (green); B. General morphology (Drawings after silver staining); C. Ciliature of the upper face; D. Ciliature of the lower face; BA. Buccal Apparatus; Ma. Macronucleus; Mi. micronucleus; Su. Sucker. Scale bar: 20 μm.
FIGURE 1 in Rumen ciliated protozoa of the Turkish domestic goats (Capra hircus L.)
FIGURE 1. Photomicrographs of the left aspects of Entodinium salmani, seems to be an endemic species of the ciliated fauna in the rumens of Turkish domestic goats. a: salmani form, b: monospinosum form, c: bispinosum form. d: trispinosum form (bars 10 µm, all specimens were fixed and stained with MFS solution).
FIGURES 4–6 in Observations on a new species of Monocystis Stein, 1848 (Protozoa: Apicomplexa: Monocystidae) Monocystis levinei sp. nov. from an Indian earthworm (Annelida: Oligochaeta) Eutyphoeus incommodus
FIGURES 4–6. Camera lucida drawings of different stages of life cycle of Monocystis levinei sp. nov. Fig. 4. Mature trophozoite; Fig. 5. Gametocyst; Fig. 6. Oocyst
FIGURES 1–3 in Observations on a new species of Monocystis Stein, 1848 (Protozoa: Apicomplexa: Monocystidae) Monocystis levinei sp. nov. from an Indian earthworm (Annelida: Oligochaeta) Eutyphoeus incommodus
FIGURES 1–3. Photomicrographs of different stages of life cycle of Monocystis levinei sp. nov. Fig1. Mature trophozoite; Fig. 2. Gametocyst; Fig. 3 Oocyst. Scale bars 100µm (Figs.1–2); 10µm (Fig. 3).
FIGURE 1. Frontonia lynni n in Frontonia lynni n. sp., a new marine ciliate (Protozoa, Ciliophora, Hymenostomatida) from Qingdao, China
FIGURE 1. Frontonia lynni n. sp. live (A–D, F, G), after silver carbonate (H, I, K) and silver nitrate impregnation (E, J). (A) Ventral view of a typical specimen. (B) A slightly deformed individual. (C) Showing variations in body shape. (D) Part of pellicle, to show extrusomes. (E) Silverline pattern. (F, G) Left and apical views of the same specimen, to show the position of the contractile vacuole. Note that the body is strongly (!) flattened. (H, I) The infraciliature of the same cell, note the small oral apparatus. (J) Oral apparatus. (K) To show the anterior and postoral sutures. AL = argentophilic line; AS = anterior suture; P1–3 = peniculi 1–3; PK = postoral kineties; PM = paraoral membrane; PS = postoral suture; VK1–3 = vestibular kineties 1–3. Scale bars in (A, B) = 50 µm, in (H, I) = 40 µm, in (J) = 20 µm.
FIGURE 3. Frontonia lynni n in Frontonia lynni n. sp., a new marine ciliate (Protozoa, Ciliophora, Hymenostomatida) from Qingdao, China
FIGURE 3. Frontonia lynni n. sp. live (A–D), after protargol (J), silver carbonate (F, G, H, K) and silver nitrate impregnation (E, I). (A) Dorsal view. (B) Arrangements of extrusomes and cilia. (C) Buccal area, showing vestibular kineties (arrowhead) and extrusomes (arrow). (D) Dorsal view, showing the contractile vacuole. (E) Buccal area, arrowheads refer to peniculi, arrow marks argentophilic line. (F) Lateral view, showing anterior suture (arrowhead). (G) Lateral view, showing posterior suture (arrow). (H) Infraciliature of oral field, arrow marks postoral kineties, arrowheads indicate vestibular kineties. (I) Silverline system. (J) Lateral view, arrowheads mark ingested diatoms. (K) A part of pellicle, arrowhead refers to a single kinetosome, arrow shows a rest extrusome. Scale bars = 50 µm.
FIGURE 2 in Frontonia lynni n. sp., a new marine ciliate (Protozoa, Ciliophora, Hymenostomatida) from Qingdao, China
FIGURE 2. Ventral views (A, C, E, G) and oral field (B, D, F, H) of Frontonia ambigua (A, B, from Dragesco & DragescoKernéis 1986), Frontonia marisalbi (C, D from Burkovsky, 1970) and Frontonia tchibisovae (E, F, from Burkovsky, 1970) after silver nitrate impregnation. Frontonia frigida (G, H, from Petz et al., 1995; G after protargol impregnation, H after silver nitrate impregnation). Scale bars = 30 µm.
Figure 3 in Track analysis and geographic distribution of some Lagenophrys Stein, 1852 (Protozoa: Ciliophora: Peritrichia) species
Figure 3. Individual tracks of Lagenophrys discoidea (a); L. orchestiae (b); L. eupagurus (c); L. cochinensis (d); L. crutchfieldi (e).
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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)
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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.