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TitleDescriptionSubjectCollection
551 Survey of lung parenchym with bronchi and blood vessels (human, adult)Stain: Azan. The bronchus (1) is surrounded with hyaline cartilage rings (2), seromucous glands (9) and muscle fibers (*), and lined with respiratory epithelium (←). Pulmonary arteries (3) in their neighborhood; a solitary pulmonary vein (8); (4) Carbon deposits of varying sizes (dust loaded macr...BronchiolusPoja Histology Collection - Respiratory System Subset
552 Survey of megakaryocytes (peripheral blood, human)Electron microscopy. In a section of a so-called buffy coat collected from peripheral blood two huge polyploid megakaryocytes (1) (diameter up to 160 μm) are present. Note the dark granules in the future platelets. (2) erythroblasts; (3) reticulocytes and erythrocytes; (4, 5) monocytes. The arrows ...Poja Histology Collection - Blood & Bone Marrow Subset
553 Survey of nose wing - humanStain: Azan. At the top orofacial muscle (1, reddish) and hyaline cartilage (2, bluish) at the right. The external skin surface of the nose wing dot side (.) is covered with squamous epithelium, light-stained sebaceous glands (3) and hair structures (4). At the starred side (*) the nasal vestibulum...Poja Histology Collection - Respiratory System Subset
554 Survey of part of splenic lymphatic nodule (rat)Electron microscopy. (1) shows an arteriolar branch of a central artery, and cross-sections of capillary branches (1a). Within the periarteriolar lymphatic sheath (PALS) mostly T lymphocytes (5) are present between concentric arranged reticular cells (2). Cells with larger lighter stained nuclei rep...central artery ; electron microscopy; PALS; Antigen presenting cells (APC)Poja Histology Collection - Lymphatic Tissues and Organs Subset
555 Survey of spleen (human)Stain: Azan. The spleen is covered by a capsule (1) of dense connective tissue and elastic fibers. The capsule continues into the spleen as trabeculae (2) carrying blood vessels and nerve fibers. As arteries leave the trabeculae it becomes invested by a sheath of T cells forming a PALS (3) or periar...white pulp; sinusoid; red pulp; PALSPoja Histology Collection - Lymphatic Tissues and Organs Subset
556 Survey of spleen (human)Stain: Trichrome (Goldner). Encapsulated by a relatively thin fibroelastic capsule (1), the splenic parenchyma shows a preferable peripheral location of the red pulp (3). There are many secondary lymphatic nodules (2) as part of the white pulp, all showing a clear germinal centre. The red pulp is a ...white pulp; red pulpPoja Histology Collection - Lymphatic Tissues and Organs Subset
557 Survey of splenic trabecular artery (human)Stain: Azan. The splenic artery (or lienal artery) is the blood vessel that provides oxygenated blood to the spleen. Branches of the splenic artery divide into trabecular arteries (1) which enter the white pulp as central arteries (4) that is surrounded with lymphocytes (5,periarteriolar lymphatic s...trabecular artery; PALS; sinusoidPoja Histology Collection - Lymphatic Tissues and Organs Subset
558 Survey of the border of splenic white and red pulp (rat)Electron microscopy. Megakaryocytes (1) are commonly found in adult spleen of rodents. In this area they are located just at the border of the white pulp (WP) with a variety of lymphocytes (3). In the splenic cords (Billroth) of the red pulp (RP) erythrocytes (2) are found.electron microscopy; white pulp; BillrothPoja Histology Collection - Lymphatic Tissues and Organs Subset
559 Survey of the chorionic plate and intervillous space (human placenta, full-term)Stain: Perjodic acid-Schiff reaction (PAS). At the top the chorionic plate (1) with cross-sections of umbilical vessels (2) At (3) the folded amnion covering the chorionic plate. Ramifications of thicker stem villi demonstrate free-floating terminal villi (tertiary). At several places reddish-st...placenta; tertiary villi; decidua; chorionic platePoja Histology Collection - Placenta
560 Survey of the intervillous space with villi (human placenta, full-term)Stain: Perjodic Acid Schiff reaction (PAS). At the right and left side the chorionic plate (1) with few cross-sectioned umbilical vessels (2), at (3) a detached amnion. Cross-sections of thick stem villi (4) at the fetal side ramify into terminal villi (tertiary) that are found stuffed (due to fix...placenta; stem villus; syncytiotrophoblast; amnionPoja Histology Collection - Placenta
561 Survey of the nasal conchae (dog, isolated turbinate bones)Stain: Hematoxylin and eosin. The conchae (turbinates) consist of three parts: the inferior, middle and superior turbinate bones (3, black-stained); they are covered by a respiratory mucosa (1) or by an olfactory mucosa (2). In humans only a small part of the superior concha exhibits olfactory epith...Conchae nasales; Olfactory epithelium; Respiratory epitheliumPoja Histology Collection - Respiratory System Subset
562 Surveys/detail of the decidua basalis and intervillous space of the placenta (human placenta, late midpregnancy)Stain: Hematoxylin ?azophloxine (A, C), Trichrome (Goldner) (B). Left pictures (A, B): The maternal side at the bottom consists of a broad zone of the stripped basal decidua (1) intermingled with reddish matrix-type fibrinoid accumulations and streaks (Rohr) (2), close to the anchoring villi (3) an...placenta; chorionic villi; fibrinoid; trophoblast shellPoja Histology Collection - Placenta
563 Syncytiotrophoblast cells of tertiary villi (human placenta, midpregnancy)(A) Left: stain: Immunoperoxidase staining with diaminobenzidin (DAB) and human anti-chorionic gonadotrophin antibody (hCG-DAKO 231), counterstained with hematoxylin. (B) Right: electron microscopy. (A) At the left the exclusive reactivity (dark brown) in the cytoplasma of the multinucleated syn...Syncytiotrophoblast; placenta ; chorionic villi; HCG; immunohistochemistry; electron microscopyPoja Histology Collection - Placenta
564 T cell depletion in lymph nodes (dog)Stain: Trichrome (Goldner). Left and right: survey of lymph nodes. A: lymph node after treatment with anti-thymocyte-antiserum (ATS); B: normal, untreated lymph node ATS treatment results in a considerable depletion of the T cells in the paracortical area (2), while also the germinal centre (1) i...T cell depletion; follicle; medulla; paracortexPoja Histology Collection - Lymphatic Tissues and Organs Subset
565 Taste bud of a foliate papil of the tongue (dorsal side, rabbit; high magnification)Stain: Heidenhain's iron hematein. Taste bud with slender cells and darker stained spiky nuclei (type I cell), and cells with light stained round nuclei (type II cells). Below axons of the gustatory nerve fibers and nuclei of Schwann cells. Arrow points to narrow pore where dark stained fluffy struc...oral cavity; foliate papillae; taste porePoja Histology Collection - Oral Cavity Subset
566 Taste bud of a foliate papilla of the tongue (dorsal side, human)Stain: antikeratin-7 / immunoperoxidase and hematoxylin counterstained. Type I cells with small slender nuclei are identified by positive staining with cytokeratin 7 (monoclonal antibody OVTL12/30).cytokeratin; oral cavity; foliate papilla; von EbnerPoja Histology Collection - Oral Cavity Subset
567 Taste bud of the tongueScheme electronmicroscopy. Generally a taste bud is composed of about 20 to 70 spindle-shaped epithelial cells. Slender type I cell ('Dark' cell) and oval shaped type II cell ('Light' cell) with a pale, round nucleus with their apices end in microvilli in the taste pore. The number of type I cells i...oral cavity; foliate papillae; taste pore; electronmicroscopyPoja Histology Collection - Oral Cavity Subset
568 Taste buds of foliate papillae of the tongue (dorsal side, rabbit)Stain: Heidenhain's iron hematein. Taste buds within the lining (non-keratinized) epithelium of the groove. Note the pore in the left taste bud, with darkly stained fluffy apical microvilli. The lightly stained gustatory nerve fibers (nuclei of Schwann cells) approach the left taste buds. The taste ...oral cavity; foliate papillae; taste porePoja Histology Collection - Oral Cavity Subset
569 Terminal sac period of developing lung (human, fetus)Stain: Hematoxylin and eosin. The transition of a terminal bronchiolus (1) into two future respiratory bronchioli (2), present as dilated spaces (saccules derived from the primitive respiratory channels, hence the name terminal sac period). The surrounding cellular tissue is composed of developing p...Lung development; Terminal sac period; Respiratory bronchioli; MesenchymePoja Histology Collection - Respiratory System Subset
570 Terminal sac period of developing lung (human, fetus, low magnification)Stain: Hematoxylin and eosin. At the right cross-sections of a large bronchus (1) with cartilage rings (2). Close to them a pulmonary artery (3), and a bronchiolus (4) without cartilage. (5) indicates a respiratory bronchiolus. Most alveoli are not inflated, the numerous dilated spaces (6) are saccu...Lung development ; Terminal sac period; Respiratory bronchioliPoja Histology Collection - Respiratory System Subset
571 Tertiary villi (human placenta, early pregnancy)Stain: (A, left) Azan. (B, right) Immunoperoxidase staining with diaminobenzidin (DAB) and hematoxylin counterstaining for human anti-chorionic gonadotrophin (hCG-DAKO 231 antibody). (A) shows blue grey-stained postmitotic multinucleated syncytiotrophoblast cells (STC, 1b), partially cut tangential...placenta; chorionic villi; placental barrier; HCGPoja Histology Collection - Placenta
572 Tertiary villi (human placenta, full-term, cross-section)Stain: Hematoxylin ? azophloxine. A few tertiary villi (1) within the intervillous space (2) contains capillary (3) and embryonic connective tissue (*). It remains covered by the postmitotic multinucleated syncytiotrophoblast cell (STC, 4). Distinct nuclear accumulation in the STC indicates the so-c...placenta; tertiary villi; syncytiotrophoblastPoja Histology Collection - Placenta
573 Tertiary villi (human placenta, full-term, cross-sectioned)Stain: Hematoxylin-azophloxine. The central villus is lined by epithelial multinucleated syncytiotrophoblast cells (1) and sparsely light-stained cytotrophoblast cells (Langhans, (2)). The fetal stroma contains vessels and mostly fibroblasts, note capillaries (3) in close association with the epithe...placenta; tertiary villus; syncytiotrophoblastPoja Histology Collection - Placenta
574 Tertiary villi (human placenta, late midpregnancy): (A) Left: stain: Hematoxylin - azophloxine. (B) Right: electron microscopy (low magnification). At the left (A) multinucleated syncytiotrophoblast cells (STCs, 1) and vaguely cytotrophoblast cells (CTCs, 2) cover the loose fetal stroma (4). A large and a small arteriole (3) are embedded with stro...placenta; tertiary villi; placental barrier; Hofbauer cell; vasculosyncytial membrane; syncytiotrophoblastPoja Histology Collection - Placenta
575 Tertiary villi (human placenta, midpregnancy)(A) Lower and (B) higher magnification. Stain: Hematoxylin - azophloxine. (C) electron microscopy of Hofbauer cell. (A, B) show tertiary villi and intervillous spaces. Squeezed between villi fibrinoid clots (1). The large arrow (2) points to either a detached, free circulating large STC (syncyt...placenta; chorionic villi; Hofbauer cell; fibrinoid; syncytiotrophoblastPoja Histology Collection - Placenta
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