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TitleDescriptionSubjectCollection
426 PromyelocyteScheme electron microscopy. The large promyelocyte (15-25 μm) contains a nucleus (1) with one or two nucleoli, the rough endoplasmic reticulum (4) is present and show many expanded profiles. Distinct also are numerous ribosomes and a well-developed Golgi area (2) where 'non-specific', primary or az...Poja Histology Collection - Blood & Bone Marrow Subset
427 Promyelocyte and basophilic erythroblast in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The composition shows a (pro)myelocyte (1) along a basophilic erythroblast (2). The (pro)myelocyte nucleus is less condensed, contains nucleoli and the light basophilic cytoplasm is filled with azurophilic granules. The cytoplasm of the erythroblast is strong basophi...Poja Histology Collection - Blood & Bone Marrow Subset
428 Promyelocyte and myelocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The large promyelocyte (1) has a large nucleus with fine disperse chromatine and visible nucleoli. The cell contains primary, azurophilic granules. In the myelocyte (2) the nucleus is located eccentrically at one side of the cell, and the amount of cytoplasm is relat...Poja Histology Collection - Blood & Bone Marrow Subset
429 Promyelocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The promyelocyte is the largest cell in the myeloid series in bone marrow. The nucleus is still transparent with fine chromatin and nucleoli are well visible. The cytoplasm contains ample azurophilic, primary granules.Poja Histology Collection - Blood & Bone Marrow Subset
430 Promyelocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The large promyelocyte contains nucleoli, coarse chromatin pattern, and abundant azurophilic granules in a basophilic cytoplasm. (2) A neutrophilic band form leukocyte with folded nucleus.Poja Histology Collection - Blood & Bone Marrow Subset
431 Prostatic carcinoma metastasis in bone marrow of sternum (human)Stain: Hematoxylin and eosin. Survey (A) and detail (B) of a prostate carcinoma metastasized to the bone marrow, (sternum aspiration). Clusters of tumour cells; clearly foreign to the marrow. Common primary tumours that metastasize to the bone marrow include breast, prostate, lung, thyroid, kidney, ...Poja Histology Collection - Blood & Bone Marrow Subset
432 Pseudoglandular - canalicular period of developing lung (human, fetus)Stain: Azan. Part of a bronchus (1) with young cartilage (2). The hyaline cartilage presents solitary chondrocytes embedded in the blue intercellular substance surrounded by a perichondrium (3). Note that the bronchus as well as the bronchial tubes (4) show an apical position of the epithelial nucle...Lung development; Pseudoglandular period; Canalicular period; MesenchymePoja Histology Collection - Respiratory System Subset
433 Pseudoglandular - canalicular period of developing lung (human, fetus)Stain: Azan. Terminal budding and elongation of the future bronchial tree: branching of a bronchial tubes (1) within an islet where the mesenchyme condenses (4). A large blood vessel (2) as well as a lymph vessel (3) are recognizable. Note in the mesenchyme formation of blood capillaries in the vici...Lung development; Pseudoglandular period ; Canalicular period; MesenchymePoja Histology Collection - Respiratory System Subset
434 Pseudoglandular - canalicular period of developing lung (human, fetus)Stain: Azan. Location of a cartilagineous ring (1) between two cross-sectioned bronchi (2). Note in the bronchial epithelial cells the apical position of the epithelial nuclei and the light-stained basal part (↑) containing glycogen. The young hyaline cartilage presents solitary chondrocytes embed...Lung development; Pseudoglandular period; Canalicular period; MesenchymePoja Histology Collection - Respiratory System Subset
435 Pseudoglandular - canalicular period of developing lung (human, fetus)Stain: Azan. Longitudinal section through a large bronchus (1) with cartilagineous rings (2). At (3) developing glandular structures in islets of bronchial tubes surrounded by condensed mesenchyme. At (4) lymph vessels.Lung development; Pseudoglandular period; Canalicular period; Mesenchyme; Bronchial tubesPoja Histology Collection - Respiratory System Subset
436 Pseudoglandular - canalicular period of developing lung (human, fetus)Stain: Azan. Part of a future lung lobe with cross-sectioned larger bronchi (1) in close association with islets of future smaller bronchial tubes (*). Note the branching of the bronchial tubes within an islet. The mesenchyme within the islets of future tubes becomes more condensed (↓). Blood vess...Lung development; Visceral pleura; Pseudoglandular period; Canalicular period; MesenchymePoja Histology Collection - Respiratory System Subset
437 Pseudoglandular period of developing lung (human, embryo)Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes, note the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme condenses (↓) around the epithelium and in the neighbourhood small blood vessels (*) are present. At...Lung development; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
438 Pseudoglandular period of developing lung (human, embryo)Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes, note the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme becomes condensed (↓) around the epithelium and in between small blood vessels (*) are present.Lung development; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
439 Pseudoglandular period of developing lung (human, embryo)Stain: Hematoxylin and eosin. Two cross-sectioned future bronchial tubes. Note the basal position of the nuclei with light-stained apical cytoplasm (↓, glycogen). The surrounding mesenchyme condenses (1) around the epithelium and developing capillaries and small blood vessels (*) are present. Futu...Lung development; Visceral pleura; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
440 Pseudoglandular period of developing lung (human, embryo, low magnification)Stain: Hematoxylin and eosin. The two future lung lobes contain many cross-sectioned future bronchial tubes (1). Note in these epithelial cells the apical position of the nuclei with light-stained basal parts (glycogen). The surrounding mesenchyme becomes more condensed (↓) around the epithelium a...Lung development; Visceral pleura; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
441 Pseudoglandular period of developing lung (human, embryo, low magnification)Stain: Hematoxylin and eosin. Cross-sectioned future bronchial tubes (1), the surrounding mesenchyme becomes more condensed around the epithelium. The mesoderm of the future visceral pleura (2) as well as the future parietal pleura (3) and (4) indicates pleural cavity. The cartilagineous spinal colu...Lung development; Visceral pleura; Parietal pleura; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
442 Pseudoglandular period of developing lung (human, embryo, low magnification)Stain: Trichrome (Goldner). Cross-sectioned future bronchial tubes (1) of varying sizes. Note the apical position of the nuclei in these epithelial cells with light-stained basal parts (glycogen). The surrounding mesenchyme becomes more condensed (↓) around the epithelium and in between numerous ...Lung development; Visceral pleura; Pseudoglandular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
443 Pseudoglandular-canalicular period of developing lung (human, fetus, low magnification)Stain: Azan. A future lung lobe with cross-sectioned larger bronchi (1) in close association with islets of future smaller bronchial tubes (*). Around the larger bronchi several cartilage structures (↓) are already present. Note that the mesenchyme around the tubes within the islets becomes more c...Lung development; Visceral pleura; Pseudoglandular period; Canalicular period; Bronchial tubes; MesenchymePoja Histology Collection - Respiratory System Subset
444 Pulp canal of tooth - longitudinal section; human, adultStain: Hematoxylin and eosin. Centrally three thick nerve bundles. In between blood vessel filled with erythrocytes. At the right side longitudinal course of slender thin-walled blood vessels (arterioles) which pass into thin-walled capillaries with a wide lumen.oral cavity; pulp canalPoja Histology Collection - Oral Cavity Subset
445 Pulp chamber of tooth - human, adultStain: Hematoxylin and eosin. Pulpal connective tissue is a special type of tissue (stromal tissue) with so-called stellate-shaped pulpal fibroblastic cells that produce growth factors, extracellular matrix including thin collageneous proteins. Blood vessels are small and thin-walled; macrophages an...oral cavity; pulp chamber; pulp fibroblastPoja Histology Collection - Oral Cavity Subset
446 Pulp stones in root of tooth - longitudinal section, human, adultStain: Hematoxylin and eosin. Left and right side dark stained dentin with a small light rim of predentin. Centrally pulp stones represent as free lying irregular calcifications. They are found diffusely distributed as spots or as thin strands following blood vessels and bundles of collagen fibers i...oral cavity; pulp stone; diffuse calcificationsPoja Histology Collection - Oral Cavity Subset
447 Pulpo-dentinal complex - segment of a tooth; human, adultStain: Hematoxylin and eosin. At the pulp-dentin border the peripheral pulp appears to be a specialized odontogenic region composed of odontoblasts, a cell-free zone and a cell-rich zone. From left to right: dentin (note striation due to dentinal tubules); (uncalcified) light stained predentin. At t...oral cavity; Tomes' Fibers; dentinal tubules; predentinPoja Histology Collection - Oral Cavity Subset
448 Pulpo-dentinal complex in longitudinal section of tooth - damaged dentin, human, adultStain: Hematoxylin and eosin. If odontoblastic processes are damaged, (e.g., erosion, caries, etc.), the entire cell will degenerate, though it may be able to produce dentin. From left to right: - irregular course of dentinal tubules; - light stained (damaged) area contain no tubules; - pulp connect...oral cavityPoja Histology Collection - Oral Cavity Subset
449 Pulpo-dentinal complex in longitudinal section of tooth - secondary dentin, human, adultStain: Hematoxylin and eosin. From left to right: - dentinal tubules as fine striation in dentin; - vertical course of incremental lines (von Ebner); - a darker stained broad zone of secondary dentin; - pulp chamber with crowding of odontoblasts close to secondary, newly formed dentin; - connective ...oral cavity; secondary dentinPoja Histology Collection - Oral Cavity Subset
450 Pulpo-dentinal complex of the tooth (human, adult).Stain: Hematoxylin and eosin. At the pulpo-dentinal border the peripheral pulp appears to be a specialized odontogenic region composed of odontoblasts, a cell-free zone and a cell-rich zone; from left to right: Dentin (note striation due to dentinal tubules). (Uncalcified) Light stained predentin. A...oral cavity; Tomes' Fibers; dentinal tubules; predentinPoja Histology Collection - Oral Cavity Subset
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