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• 04:24, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction10.jpg (This is a gross photograph of a brain from another patient with an old healed infarct. Note the meninges overlying the infarcted region (arrow).)
• 04:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction9.jpg (This is a photomicrograph of the edge of the infarct. Note the gitter cells, gemistocytic astrocytes, and some hemosiderin-laden macrophages (arrows).)
• 04:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction8.jpg (This is a high-power photomicrograph of gitter cells (arrows).)
• 04:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction7.jpg (This is a photomicrograph of the edge of the infarct. The macrophages that are full of brain tissue (“gitter cells”) are at the top of the image (arrows) and the brain parenchyma containing gemistocytic astrocytes is at the bottom.)
• 04:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction6.jpg (This is a photomicrograph of brain tissue adjacent to the area of infarction. There are numerous activated gemistocytic astrocytes (arrows).)
• 04:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction5.jpg (This is a higher-power photomicrograph of the previous image showing that the inflammatory cells (arrows) are primarily macrophages and microglia which have phagocytosed the dead brain tissue.)
• 04:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction4.jpg (This is a photomicrograph of the edge of the infarct. Note the numerous inflammatory cells in the brain parenchyma and adjacent to the remaining brain tissue (arrows).)
• 04:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction3.jpg (This is a low-power photomicrograph of brain at the edge of the infarct. Note the loss of brain parenchyma (arrows).)
• 04:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction2.jpg (This is a gross photograph of a cross-section of brain demonstrating the areas of infarction (arrows).)
• 04:21, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3BrainInfarction1.jpg (This is a gross photograph of the brain which contains two areas of infarction (arrows).)
• 04:17, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer11.jpg (This is a trichrome-stained section of tissue demonstrating fibrous connective tissue scar formation (blue color) in this lesion. The surface of the ulcer is at the left-hand side of the image. There is a layer of inflammatory cells and RBCs on the sur...)
• 04:17, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer10.jpg (This is a photomicrograph of the serosal surface (1) from a section of stomach near the ulcer. Note that the inflammatory reaction extends out to the serosa.)
• 04:17, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer9.jpg (This high-power photomicrograph demonstrates the granulation tissue within the base of the ulcer.)
• 04:16, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer8.jpg (This low-power photomicrograph demonstrates the healing reaction in the base of this ulcer. The base of the ulcer is at the left-hand side of the image and the serosal surface is at the right. Note the fibrous connective tissue within the wall of the s...)
• 04:16, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer7.jpg (This high-power photomicrograph of the ulcer base demonstrates plump, activated fibroblasts and endothelial cells (arrows) within the granulation tissue that makes up the base of the ulcer. There are inflammatory cells (primarily lymphocytes) within th...)
• 04:16, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer6.jpg (This high-power photomicrograph of the ulcer base (arrows) demonstrates the lack of epithelium and the exuberant inflammatory response (1) consisting of primarily of fibrin (and adherent gastric secretions) and PMNs. The surface of the ulcer bed is cov...)
• 04:16, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer5.jpg (This is a medium-power photomicrograph of the base of the ulcer with the fibrinopurulent membrane (1) overlying the ulcerated surface. The ulcerated surface contains granulation tissue and inflammatory cells (2).)
• 04:15, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer4.jpg (This is a photomicrograph of the margin of the ulcer. Note the intact epithelium on the right side of the section (1) and the ulcerated region without epithelium on the left (2). There are numerous inflammatory cells within this tissue.)
• 04:15, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer3.jpg (This is a low-power photomicrograph of the transected ulcer. The blue cells on the right hand side of this section are the normal gastric epithelial cells of the mucosa (1). Note the absence of any epithelial cells within the crater of the ulcer (2).)
• 04:15, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer2.jpg (This is a gross photograph of the ulcer after it has been transected. The edge of the mucosa (1) is better appreciated in this image. Note the thick, fatty tissue (2) which makes up the base of this ulcer (3).)
• 04:14, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ChronicPepticUlcer1.jpg (This is a gross photograph of a stomach containing an ulcer. Note the folded pink gastric mucosa that extends up to the edge of the ulcer (arrows).)
• 04:10, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3FibrinousPericarditis5.jpg (This high-power photomicrograph demonstrates fibrin (red amorphous material) on the surface of the pericardium (1). Note the reactive mesothelial cells on the surface of the pericardium (arrows) and the inflammatory cells within the pericardial tissue.)
• 04:10, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3FibrinousPericarditis4.jpg (This is a higher-power photomicrograph demonstrating fronds of fibrin (arrows) projecting from the surface of the pericardium.)
• 04:10, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3FibrinousPericarditis3.jpg (This low-power photomicrograph illustrates the dark-red-staining fibrin deposits on the inner surface (arrows). This pericardium is much thicker than normal and there are numerous inflammatory cells within the pericardial tissue.)
• 04:10, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3FibrinousPericarditis2.jpg (This is another view of the heart with the pericardium removed. Most of the epicardial surface is covered with fibrinous deposits as in the previous slide. There are a few glistening areas of exposed normal epicardial tissue.)
• 04:10, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3FibrinousPericarditis1.jpg (This is a gross photograph of a heart illustrating acute fibrinous pericarditis. The pericardium on this heart has been reflected back (arrows). The surface of the heart is rough due to the deposition of fibrin on the epicardial surface of the heart an...)
• 03:48, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ForeignBodyGranuloma5.jpg (This is a fully-polarized view of lung showing numerous birefringent particles.)
• 03:48, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ForeignBodyGranuloma4.jpg (This is a photomicrograph of lung taken under light that is partially polarized to demonstrate the birefringent particles within the granulomas (1). Also, at this magnification one can better appreciate that these granulomas are adjacent to blood vesse...)
• 03:47, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ForeignBodyGranuloma3.jpg (A higher-power photomicrograph of these granulomas reveals that they surround blood vessels (note the red blood cells within the lumen) (arrow).)
• 03:47, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ForeignBodyGranuloma2.jpg (This higher-power photomicrograph demonstrates the small focal cellular lesions (arrows) found throughout the parenchyma of the lung.)
• 03:47, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3ForeignBodyGranuloma1.jpg (This is a low-power photomicrograph of lung and pleura. There is some hemorrhage in this tissue (arrows), probably the result of surgery or the gunshot wounds.)
• 03:39, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Tuberculosis5.jpg (This high-power photomicrograph of a tuberculosis granuloma demonstrates acid-fast bacilli (arrows).)
• 03:39, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Tuberculosis4.jpg (This is a high-power photomicrograph of a granuloma. Note the necrotic core on the right (1), epithelioid macrophages (2), and Langhans’ type giant cells (3) at the periphery of the granuloma. Note also the small lymphocytes characterized by their di...)
• 03:39, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Tuberculosis3.jpg (This is a photomicrograph of a tuberculosis granuloma. Note the central core of caseation necrosis (1) encircled by a rim of epithelioid macrophages and lymphocytes (2). Langhans’ type multinucleated giant cells are also present although they are dif...)
• 03:38, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Tuberculosis2.jpg (This low-power photomicrograph of a section of lung reveals multiple large nodules (1) with pale eosinophilic centers surrounded by a rim of blue-staining nuclei. In addition to the large nodules, there are several smaller nodules throughout the slide ...)
• 03:38, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Tuberculosis1.jpg (This is a gross photograph of a lung containing a nodular lesion at the lung apex (arrows). Note that the lesion appears solid and has a whitish coloration indicating considerable fibrous connective tissue. This is a healed granuloma due to primary tub...)
• 03:34, 19 August 2013 Seung Park (talk | contribs) deleted page Category:IPLab 3 (Duplicate category -- merged with Category:IPLab:Lab 3)
• 03:31, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis6.jpg (This is a higher-power photomicrograph of an asteroid body (arrow) inside of a multinucleated giant cell.)
• 03:30, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis5.jpg (This is a photomicrograph of a multinucleated giant cell (1). In the center of this foreign body-containing giant cell there is a small asteroid body (2). There is no functional significance to this asteroid body.)
• 03:30, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis4.jpg (This photomicrograph of a single granuloma illustrates the individual macrophages (arrows) which make up the bulk of this tissue. There is an absence of necrosis in the center of the lesions in this case.)
• 03:30, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis3.jpg (This is a photomicrograph of the small nodules (arrows) seen in the previous image. Close examination reveals that they are composed of large macrophages (epithelioid macrophages). These small granulomas form multiple series of reaction centers through...)
• 03:30, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis2.jpg (This photomicrograph of lymph node tissue illustrates a paucity of lymphocytes as well as numerous small, pale-staining nodules (arrows) throughout the tissue.)
• 03:29, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Sarcoidosis1.jpg (This is a low-power photomicrograph of a lymph node. Note the rather pale-pink color of the tissue with dark-staining cells found in only a few scattered areas. These darker cells represent the original lymphocytes of this lymphoid organ.)
• 03:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia7.jpg (This higher-power photomicrograph shows a central portion of an abscess. Note the absence of any parenchymal lung tissue in this section due to extensive neutrophilic infiltration with liquefaction necrosis of the parenchymal tissue. Masses of leukocyt...)
• 03:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia6.jpg (This is a photomicrograph of another area in the lung showing a terminal bronchiole (1) in which the mucosal lining has been almost completely destroyed. There is extensive neutrophilic infiltration throughout this lung tissue.)
• 03:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia5.jpg (This is a photomicrograph of lung tissue affected by bronchopneumonia. Note that the alveolar structure of this tissue, which is in the region of a terminal bronchiole (1), has been retained despite the massive infiltration of inflammatory cells. These...)
• 03:23, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia4.jpg (This photomicrograph of the wall of an abscess (1) illustrates liquefaction necrosis in the center of the abscess (2). The remaining lung parenchyma (on the right side of the image) has extensive neutrophilic infiltration into the alveoli (3). This abs...)
• 03:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia3.jpg (This is a low-power photomicrograph of lung with multiple focal lesions (1) throughout the tissue, some of which have a pale center indicating a loss of parenchymal tissue (2). This is typical of abscess formation in the lung and represents a form of l...)
• 03:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia2.jpg (This is a closer view of the same lung tissue showing the individual small lung abscesses (arrows).)
• 03:22, 19 August 2013 Seung Park (talk | contribs) uploaded File:IPLab3Bronchopneumonia1.jpg (This gross photograph of lung illustrates multiple abscesses throughout the lung of this patient.)

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