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TitleDescriptionSubjectCollection
226 Keratin 7 in the bronchial epithelium of the lung (human, adult)Stain: anti-keratin 7 antibody (Pan-Ck 7) immunoperoxidase staining (with aminoethylcarbazole (AEC) substrate). The epithelium of the bronchus (1) stains dark brown-red after the reaction with AEC indicating a positive reaction for cytokeratin 7. This antibody can be used in the study of development...Bronchiolus; Immunoperoxidase; Immuno-reactionPoja Histology Collection - Respiratory System Subset
227 Keratin 7 in the lining alveolar epithelium of the lung (human, adult)Stain: anti-keratin 7 antibody (Pan-Ck 7) immunoperoxidase staining (with aminoethylcarbazole (AEC) substrate). Both alveolar epithelial cell types I (1) and II (2) stain dark brown-red after the reaction with AEC indicating a positive reaction for cytokeratin 7. Note the white (non-stained) capilla...Pneumocyte I; Pneumocyte II; Imunoperoxidase; Immuno-reactionPoja Histology Collection - Respiratory System Subset
228 Keratin 7 staining in dysplastic epithelium of a bronchus (human, adult)Stain: anti-keratin 7 antibody (Pan-Ck 7) immunoperoxidase staining (with aminoethylcarbazole (AEC) substrate). A red-brown staining with AEC indicates a positive reaction for cytokeratin 7. Disturbances in the growth and maturing might result in dysplasia of the epithelium with a changed reaction p...Immunoperoxidase; Immuno-reactionPoja Histology Collection - Respiratory System Subset
229 Keratin 7 staining in squamous metaplasia and dysplasia of the epithelium of a bronchus (human, adult)Stain: anti-keratin 7 antibody (Pan-Ck 7) immunoperoxidase staining (with aminoethylcarbazole (AEC) substrate). A red-brown staining with AEC indicates a positive reaction for cytokeratin 7. Note that the top layer only reacts weakly positive for keratin 7 (↓). Upon squamous metaplasia the bronch...Squamous metaplasia; Immunoperoxidase; Immuno-reactionPoja Histology Collection - Respiratory System Subset
230 Keratin 7 staining in squamous metaplasia of the epithelium of a bronchiolus (human, adult)Stain: anti-keratin 7 antibody (Pan-Ck 7) immunoperoxidase staining (with aminoethylcarbazole (AEC) substrate). A red-brown staining with AEC indicates a positive reaction for cytokeratin 7. Note that the top layer only is stained positively for keratin 7 (↓). Upon squamous metaplasia the bronchio...Bronchiolus; Squamous metaplasia; Immunoperoxidase; Immuno-reactionPoja Histology Collection - Respiratory System Subset
231 Keratin staining of bronchus epithelium (human, adult)Stain: Anti-keratin-5-7-14-19 (OVTL 12/5 monoclonal antibody with immunoperoxidase staining on frozen sections). The pseudostratified epithelium (1) is stained keratin-positively (brown product) as well as the epithelial derivates such as the bronchial glands (2) and their excretory ducts (3). Other...Bronchial epithelium; Keratin antibodies; Tumor diagnosisPoja Histology Collection - Respiratory System Subset
232 Keratin staining of bronchus epithelium (human, adult)Stain: Anti-keratin-5-7-14-19 (OVTL 12/5 monoclonal antibody with immunoperoxidase staining on frozen sedctions). The pseudostratified epithelium (1) reacts positively (brown-red product), the nuclei of the basal cells are well visible (arrows). Other structures react negatively (blue stain) such as...Tumor diagnosis; Bronchial epithelium; Lung parenchym; Keratin antibodiesPoja Histology Collection - Respiratory System Subset
233 Lamellar body of a type II alveolar cell in the lung (dog)Electron microscopy. Extrusion of surfactant material out of a type II alveolar cell (pneumocyte II, great alveolar cell). After fusion of a multilamellar body (1) (cytosome) with the apical cell membrane (note microvilli 2) the electron-dense lamellar content or surfactant (consisting of phosphatid...Type II alveolar cell; Pneumocyte II; Multilamellar bodies; Cytosomes; Tubular myelinPoja Histology Collection - Respiratory System Subset
234 Laminin in the canalicular period of the lung (mouse, embryo)Stain: Fluorescence microscopy with anti-laminin antibody. Laminin is a component of the basement membrane. Strong fluorescence visualizes the course of all basement membranes, especially around the bronchioles (B) and their branches in the developing lung tissue. In between the distal air spaces (t...Bronchioli; Canalicular periodPoja Histology Collection - Respiratory System Subset
235 Large lymphocyte and monocyte in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). The large lymphocyte (1) has a slightly condensed nucleus and the cytoplasm contains some fine azurophilic granules, and is therefore sometimes called large granular lymphocyte (LGL) or killer cell. The monocyte (2) is generally larger than the lymphocyte with a roun...Poja Histology Collection - Blood & Bone Marrow Subset
236 Large lymphocyte and small plasmacytoid lymphocyte in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). (1) large lymphocyte with a transparent light cytoplasm in which few fine granules are visible. (2) (inset) smaller plasmacytoid lymphocyte (activated young B cell) with light basophilic cytoplasm.Poja Histology Collection - Blood & Bone Marrow Subset
237 Large lymphocyte in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). The large lymphocyte has a dense chromatin structure and a large transparent cytoplasm with some granules (→). (On the contrary a monocyte exposes a more transparent nucleus and a slightly greyish cytoplasm).Poja Histology Collection - Blood & Bone Marrow Subset
238 Late band-form of neutrophilic granulocyte (peripheral blood, human)Electron microscopy. Band forms (9-12 μm) are the earliest stages of the motile two-lobed granulocytes. The horseshoe shaped nucleus (3) is irregularly and indicates progressing lobulation. The neutrophil contains many granules of varying sizes and densities. On base of routine electron microscopy ...Poja Histology Collection - Blood & Bone Marrow Subset
239 Late cap stage in tooth development - human, embryoStain: Azan. From top to bottom: Top side stellate reticulum (enamel pulp) consisting of a network of ectoderm-derived cells; Right side outer dental epithelium with part of the fibrous tooth follicle. This epithelium will further develop downwards as the outer layer of the Hertwig's epithelial root...oral cavityPoja Histology Collection - Oral Cavity Subset
240 Late cap stage in tooth development - human, embryoStain: Azan. The stellate reticulum (enamel pulp) consists of a network of ectoderm-derived branched cells and fluid-filled spaces (a.o. proteoglycans). It is a specialized avascular layer as a support and protection for the inner dental epithelial cells. At the right side one layer of cuboidal oute...oral cavity; tooth development; outer dental epithelium; stellate reticulumPoja Histology Collection - Oral Cavity Subset
241 Late cap stage in tooth development - human, embryoStain: Azan. From top to bottom: At the top stellate reticulum (enamel pulp) consisting of a loose network of ectoderm-derived cells; Darker stained cell layers of the stratum intermedium; Columnar inner dental epithelium (presecreetory ameloblasts) at the distal side (secretion area) oriented towar...oral cavityPoja Histology Collection - Oral Cavity Subset
242 Late cap stage of tooth development - human, embryo; low magnificationStain: Azan. From top to bottom: Stratified ectoderm with a distinct basal layer (red line) of cuboid cells; Dental lamina giving rise to the cap stage (center) and to the primordium of permanent tooth (right); Odontogenic organ or enamel organ (future deciduous tooth surrounded by fibrous tooth fol...oral cavity; dental laminaPoja Histology Collection - Oral Cavity Subset
243 Late terminal sac period of developing lung (human, fetus, low magnification)Stain: Hematoxylin and eosin. Cross-sections of a bronchus (1) with cartilage rings (2) closely associated with pulmonary arteries (3). The alveolar appearance is evident, and the open spaces represent future alveolar duct systems as well as alveolar sacs. The cellular septa are still thick due to n...Lung development; Terminal sac periodPoja Histology Collection - Respiratory System Subset
244 Leukocyte Alkaline Phosphatase (LAP/NAP score) in peripheral blood smear (human)Stain: Alkaline phosphatase staining (Ackerman). In mature neutrophils granules contain alkaline phosphatase. In eosinophils no alkaline phosphatase activity is present. A considerable number of brown stained neutrophils can be indicative for a patient with infection (leukemoid reaction, A). Image i...Poja Histology Collection - Blood & Bone Marrow Subset
245 Lingual tonsil ('lymphoepithelial tissue', 'gut-associated lymphatic tissue' or GALT) (human)Stain: Azan. A: Survey; B: detail of the crypt. The lingual tonsil consists of accumulations of bulging lingual lymphatic follicles in the dorsal part of the tongue behind the terminal sulcus, and belongs to the so-called Waldeyer's ring of pharyngeal lymphatic tissue. The left (A) and right (B) ...lingual tonsil; GALT; Non-keratinized stratified squamous epithelium; cryptPoja Histology Collection - Lymphatic Tissues and Organs Subset
246 Lingual tonsil ('lymphoepithelial tissue', 'gut-associated lymphatic tissue' or GALT) (human)Stain: Azan. A: Left side shows a secondary lymphatic follicle (1) separated by the connective tissue of the proper lamina (2) from the lining non-keratinized stratified squamous epithelium (3). The mantle zone (4) is indicated by the peripheral dense aggregations of (memory) B lymphocytes. (5) diff...lingual tonsil; GALT; non-keratinized stratified squamous epitheliumPoja Histology Collection - Lymphatic Tissues and Organs Subset
247 Lip (human), external skin surfaceStain: Azan. Keratinized squamous epithelium with one hair follicle associated with sebaceous gland. Richly vascularized connective tissue. Note the thin red cornified layer on the surface.oral cavityPoja Histology Collection - Oral Cavity Subset
248 Lip (human), mucoserous labial glands in mucous inner surfaceStain: Azan. Mixed labial glands with serous demilunes (von Ebner-Giannuzzi), a few myoepithelial cells, and a striated duct (right upper corner).oral cavity; lining mucosa; labial glandsPoja Histology Collection - Oral Cavity Subset
249 Lip (human), mucous inner surfaceStain: Azan. Non-keratinized epithelium with high, narrow dermal papillae and many capillaries. Mixed labial glands (seromucous) and few skeletal muscle fibers (orbicularis oris) in the submucosa.oral cavity; lining mucosa; labial glandsPoja Histology Collection - Oral Cavity Subset
250 Lip (human), mucous inner surfaceStain: Azan. Non-keratinized epithelium with high, narrow dermal papillae and many capillaries. Note lymphocytic infiltrates and the capillaries in the dermal papillae.oral cavity; lining mucosaPoja Histology Collection - Oral Cavity Subset
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