The Health Education Assets Library (HEAL) is a collection of over 22,000 freely available digital materials for health sciences education. The collection is now housed at the University of Utah J. Willard Marriott Digital Library.
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| Title | Description | Subject | Collection | ||
|---|---|---|---|---|---|
| 176 |
 |
Fibrillin in the alveoli of lung emphysema (human, adult) | Stain: antifibrillin antibody immunoperoxidase staining with diaminobenzidin reaction. Fibrillin is one of the elastin-associated microfibrillar proteins, and marks therefore also the presence of elastin in lung tissue. In centrilobular emphysema (e.g., in lungs of smokers) the lesions are more com... | Alveolar septa; Elastin-associated proteins; Fibrillin | Poja Histology Collection - Respiratory System Subset |
| 177 |
 |
Fibrillin in the alveoli of lung emphysema (human, adult) | Stain: antifibrillin antibody immunoperoxidase staining with diaminobenzidin reaction. Fibrillin is one of the elastin-associated microfibrillar proteins, and marks therefore the presence of elastin in lung tissue. In centrilobular emphysema (e.g., in lungs of smokers) the lesions are more common an... | Alveolar tips; Elastin-associated proteins; Fibrillin | Poja Histology Collection - Respiratory System Subset |
| 178 |
 |
Fibrillin in the alveoli of the lung (human, adult) | Stain: antifibrillin antibody immunoperoxidase staining with diaminobenzidin reaction. Fibrillin is one of the elastin-associated microfibrillar proteins. Here fibrillin (and elastin) is localized as brown threads in the alveolar septa and alveolar tips (1). The elastin is visible as white threads (... | Alveolar tips; Elastin-associated proteins; Fibrillin | Poja Histology Collection - Respiratory System Subset |
| 179 |
 |
Fibrin phagocytosis by neutrophils (peripheral blood, mouse) | Electron microscopy. At site of tissue damage motile neutrophils are among the first to be involved actively in phagocytosis. In between a cluster of neutrophilic granulocytes fibrin depositions (1) are present. At (1→) fibrin accumulations are close attached to the surface of a neutrophil indicat... | Poja Histology Collection - Blood & Bone Marrow Subset | |
| 180 |
 |
Filiform papillae of the tongue (dorsal side, human) | Stain: Heidenhain light bordeaux. Detail of the threadlike keratinized extensions of the stratified epithelium. Primary connective tissue papillae with 2 to 3 secondary papillae. Note the absence of taste buds in filiform papillae. | oral cavity; filiform papillae | Poja Histology Collection - Oral Cavity Subset |
| 181 |
 |
Filiform papillae of the tongue (dorsal side, human) | Stain: Azan. Oblique cross-section through the top of the filiform papillae. At the top of the picture keratinized extensions. Primary connective tissue papillae (blue) divide in several small secondary ones. | oral cavity; filiform papillae | Poja Histology Collection - Oral Cavity Subset |
| 182 |
 |
Filiform papillae of the tongue (dorsal side, human, neonate) | Scanning electronmicroscopy. Slender, thin threadlike extensions of the filiform papillae. In between a broad fungiform papilla. | oral cavity; filiform papillae; fungiform papilla | Poja Histology Collection - Oral Cavity Subset |
| 183 |
 |
Filiform papillae of the tongue - dorsal side, human | Stain: Goldner trichrome. Detail of the threadlike keratinized extensions (red) of the stratified epithelium. Primary connective tissue papillae (green) divide in several small secondary ones. Note the absence of taste buds in filiform papillae. | oral cavity; filiform papillae | Poja Histology Collection - Oral Cavity Subset |
| 184 |
 |
Filiform papillae of the tongue - dorsal side, human | Stain: Heidenhain light bordeaux. Transverse section through the middle of the filiform papillae showing secondary connective tissue papillae (lightly stained). | oral cavity; filiform papillae | Poja Histology Collection - Oral Cavity Subset |
| 185 |
 |
Flaming plasma cell in peripheral blood smear (human) | Stain: May-Grnwald-Giemsa (MGG). The so-called flaming plasma cell (1) is characterized by fiery fringes, which are formed by pseudopodic cytoplasmic projections (arrows) that stain with carmin red. These peripheral cytoplasmic spots contain numerous dilated endoplasmic reticulum cisterns, which are... | Poja Histology Collection - Blood & Bone Marrow Subset | |
| 186 |
 |
Foliate papillae of the tongue (dorsal side, rabbit) | Stain: Goldner trichrome. Foliate papil with primary and secondary connective tissue projections. Taste buds are localized in the lining, non-keratinized epithelium of the grooves. The serous gland of von Ebner (minor salivary gland) drains via an enlarged duct into the left groove of the papil. | oral cavity; foliate papillae; von Ebner | Poja Histology Collection - Oral Cavity Subset |
| 187 |
 |
Follow-up of the process of diapedesis through stratified epithelium of the palatine tonsil (gut-associated lymphatic tissue or GALT) (human) | Stain: (A, C) Azan and (B, D) anti-keratin-antibody and immunoperoxidase staining using diaminobenzidin (DAB) on frozen section, counterstained with hematoxylin. (1) (keratinized) stratified squamous epithelial cells. (2) between desquamated epithelial cells the spaces are filled with infiltrated l... | stratified squamous epithelial cells; GALT | Poja Histology Collection - Lymphatic Tissues and Organs Subset |
| 188 |
 |
Free denticulus (pulp stone) in the tooth - longitudinal section of root pulp; human, adult | Stain: Hematoxylin and eosin. In the center of pulp connective tissue a free pulp stone (false denticulus). Dispersed through the pulp several small stones. Left of the central stone a longitudinal sectioned thin-walled blood vessel; right of the stone bundles of nerve fibers. | oral cavity; denticulus; pulp stone | Poja Histology Collection - Oral Cavity Subset |
| 189 |
 |
Free surfactant (tubular myelin) in alveolar space of the lung (rat) | Electron microscopy. After fixation the extracellular lining of surfactant (phosphatidylcholine, phosphoglycerol, cholesterol and proteins) will often be present as free packed lamellae in the alveolar space. This so-called tubular myelin (partly cross-sectioned), (1) is observed as stacks of lipid ... | Pneumocyte II; Tubular myelin | Poja Histology Collection - Respiratory System Subset |
| 190 |
 |
Frontal section of head (pig, fetus) | Stain: Azan. At the upper half the nasal septum (7) is a lightly stained plate (cartilago septi nasi). Developing conchae with supporting hyaline cartilage scaffolds (*) (light-stained) are present in the nasal chamber (1) and known as inferior (lowest), middle and superior turbinate bones. The whol... | Conchae nasales; Trabecular bone | Poja Histology Collection - Respiratory System Subset |
| 191 |
 |
Fungiform papillae of the tongue (dorsal side, human) | Stain: Hematoxylin and eosin. A broad prominent papil of connective tissue (without secondary papils) covered by non-keratinized stratified epithelium. This specimen does not show any taste bud. Well vascularized lamina propria. | oral cavity; fungiform papillae | Poja Histology Collection - Oral Cavity Subset |
| 192 |
 |
Giant neutrophilic metamyelocyte in bone marrow smear (human) | Stain: May-Grnwald-Giemsa (MGG). (1) Giant neutrophilic metamyelocyte. (2) Normal neutrophilic metamyelocytes. (3) Smudged eosinophilic granulocyte. (4) Orthochromatic erythroblast. | Poja Histology Collection - Blood & Bone Marrow Subset | |
| 193 |
 |
Giant plasma cell in peripheral blood smear (human) | Stain: May-Grnwald-Giemsa (MGG). A giant plasma cell with diffusely spread immunoglobulins in the cytoplasm. The Golgi area remains unstained (white area). | Poja Histology Collection - Blood & Bone Marrow Subset | |
| 194 |
 |
Gingiva ('attached' gingiva of decalcified alveolar bone, human, adult) | Stain: Hematoxylin and eosin. Thick layer of stratified squamous epithelium with parakeratosis (reddish) and shallow papillae of the lamina propria. At the bottom lamellar bone tissue (alveolar bone) with thickened periosteum. | oral cavity; alveolar bone | Poja Histology Collection - Oral Cavity Subset |
| 195 |
 |
Gingiva ('free' gingiva of decalcified tooth, human, adult) | Stain: Hematoxylin and eosin. Thick layer of stratified squamous epithelium with parakeratosis (reddish) and many narrow papillae of the lamina propria. | oral cavity | Poja Histology Collection - Oral Cavity Subset |
| 196 |
 |
Gingiva - 'attached' gingiva of decalcified alveolar bone, human | Stain: Hematoxylin and eosin. Stratified squamous epithelium with parakeratosis (reddish) and deep papillae of the lamina propria. At the bottom, lamellar bone tissue (alveolar bone) with thickened periosteum (part of the periodontal ligament). At the bottom dentin. | oral cavity | Poja Histology Collection - Oral Cavity Subset |
| 197 |
 |
Gingiva - 'free' gingiva of decalcified alveolar bone, human | Stain: Hematoxylin and eosin. Thick layer of stratified squamous epithelium with parakeratosis (reddish) and broad papillae of the lamina propria. At the left, dense collagen tissue (projections of the the periodontal ligament). | oral cavity | Poja Histology Collection - Oral Cavity Subset |
| 198 |
 |
Granular megakaryocyte producing platelets in bone marrow smear (human) | Stain: May-Grnwald-Giemsa (MGG). The centrally located megakaryocyte (1) has a huge nucleus (polyploidy) and an extended cytoplasm from which platelets are released at the periphery (arrows). | Poja Histology Collection - Blood & Bone Marrow Subset | |
| 199 |
 |
Gross scheme of a lung lobule and its vascularization (human) | Scheme of branching of intrapulmonary bronchus. A small intrapulmonal bronchus with cartilage rings (1) divides into bronchioli (2), at (3) the terminal bronchioli that continues into respiratory bronchioli (4) followed by alveolar ducts (5) and at (6) the alveoli. A respiratory bronchiolus with alv... | Intrapulmonary bronchus; Bronchioli; Alveolar ducts; Lymphatic plexus; Visceral pleura | Poja Histology Collection - Respiratory System Subset |
| 200 |
 |
Hassall's corpuscle in thymus (human, puberty) | Stain: Hematoxylin. A larger magnification of the thymic medulla reveals the purple-stained structures in the centre of a so-called Hassall's (or thymic) corpuscle consisting of keratinized (*) epithelial cells. It is surrounded by recognizable flattened cells showing keratohyalin granules (-->). T... | thymic corpuscle (Hassalls); epithelioreticular cell (ERC); lymphoid tissue | Poja Histology Collection - Lymphatic Tissues and Organs Subset |