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TitleDescriptionSubjectCollection
76 Lip (human), outer (left) and inner side (right)Stain: Azan. Left image: keratinized squamous epithelium with thin red cornified layer, hair follicle, sebaceous glands and skeletal muscle fibers (orbicularis oris). Right image: non-keratinized epithelium with high, narrow dermal papillae and more capillaries. Mixed labial glands (seromucous), f...oral cavity; lining mucosaPoja Histology Collection - Oral Cavity Subset
77 Lip (human), region between red zone (vermilion border) and mucosa inner surfaceStain: Azan. Bundles of skeletal muscle fibers (musculus orbicularis oris), highly vascularized lamina propria. Note the narrow dermal papillae on the left side (inner lip) and the broad irregular papillae on the right side (red zone of the lip).oral cavity; lining mucosa; red zone; vermilion borderPoja Histology Collection - Oral Cavity Subset
78 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
79 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
80 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
81 Lymph node (human)Stain: Silver stain (Gomori). Due to the argyrophilia of reticular fibres the reticular network is black-stained among others such as collagen type I, III, IV. From the fibrous capsule (1) a meshwork of fine reticular fibres penetrates into the cortex of a lymph node crossing the subcapsular (or m...germinal center; argyrophilia; reticular fibersPoja Histology Collection - Lymphatic Tissues and Organs Subset
82 Lymph node (fetus, human)Stain: Trichrome (Goldner). Along the course of lymphatic vessels lymph nodes develop. Lymphatic vessels dilate and form lymphatic sacs and lymphocytes aggregate around these sacs. A tiny developing lymph node with dense-stained thymocyte nuclei is closely associated with dilated lymph capillaries. ...fetal lymph node; developmentPoja Histology Collection - Lymphatic Tissues and Organs Subset
83 Lymph node (human)Stain: Azan. Left: subcapsular (or marginal) sinus in lymph node. Right: higher magnification. Both pictures show a thick capsule (1), at (2) subcapsular (or marginal) sinus filled with lymphocytes indicate (lining) littoral cells (?). Reticular cells (3) are localized perpendicularly through sin...subcapsular sinus; reticular cellPoja Histology Collection - Lymphatic Tissues and Organs Subset
84 Lip (human), transitional zone (red zone or vermilion border)Stain: Azan. Slightly cornified epithelium with high irregular dermal papillae and many capillaries. Note the epithelium is thicker, but less cornified than the epidermis. The red color of the lips is due to the rich vascularity of the lamina propria and the lucidity of the epithelium.oral cavity; lining mucosa; red zone; vermilion borderPoja Histology Collection - Oral Cavity Subset
85 Lip (human), transitional zone (red zone or vermilion border)Stain: Azan. Slightly cornified epithelium with high irregular dermal papillae and many capillaries. Fat cells and skeletal muscle cells are located in the submucosa.oral cavity; lining mucosa; red zone; vermilion borderPoja Histology Collection - Oral Cavity Subset
86 Lymph Nodes of Head and Neck (Labeled)Lymph nodes. Head. Neck.Submental; Submandibular; Deep Cervical; Jugulodigastric; Mastoid; Occipital; ParotidRoyal College of Surgeons in Ireland Illustrations
87 Lung carcinoma metastatic to adrenal glandThis is a gross photograph of a non-small cell carcinoma metastatic to the adrenal gland.HEAL Reviewed Collection
88 Lymph nodes (rat)Stain: Hematoxylin & pyronin. Pyronin was formerly used to demonstrate young blast cell types rich in polysomes and packed rough endoplasmic reticulum (RER) resulting in a reddish stain of the cytoplasm. A: Part of the medulla with medullary cords (1) and medullary sinuses (2) close to the hilum o...infection; medullar cord; plasma cells ; macrophagesPoja Histology Collection - Lymphatic Tissues and Organs Subset
89 Lymph node (human)Stain: Azan. Part of the cortex of a lymph node with the capsule (1) and subcapsular (or marginal) sinus (2) filled with lymphocytes. From the blue-stained dense capsule a long trabecula (3) flanked by paratrabecular (intermediate) sinuses penetrates between the paracortical areas (6). Paratrabecula...Poja Histology Collection - Lymphatic Tissues and Organs Subset
90 Lymph node (rat)Electron microscopy. In the paracortical area (inner cortex) of a lymph node interdigitating cells (1) are found (so-called IDC, antigen-presenting cell or APC). They show branched extensions (3) in between the closely apposed surrounding T lymphocytes (2). In the cytoplasm of the IDC lysosomal inc...electron microscopy; interdigitating cell; antigen-presenting cellPoja Histology Collection - Lymphatic Tissues and Organs Subset
91 Lymph node (human)Stain: Azan. Part of the cortex of a lymph node with the capsule (1) and subcapsular (or marginal) sinus (2) filled with lymphocytes. Below the subcapsular sinus a darkly stained rim or corona (3) of small lymphocytes (B cells) surrounds the lucid stained germinal centre (4). The white spaces repre...follicle; germinal centerPoja Histology Collection - Lymphatic Tissues and Organs Subset
92 Lymph node (mouse)Stain: Hematoxylin & eosin. For comparison with the human lymph node a survey of a small rodent lymph node is demonstrated. Basically the same divisions are found: (1) a cortex (outer cortex zone, nodular cortex or superficial cortex) covered with a (2) thin capsule and subcapsular sinus; a paracor...follicle; hilum; medulla; cortexPoja Histology Collection - Lymphatic Tissues and Organs Subset
93 Lymph node (rat)Electron microscopy. Within the reticular framework of lymph nodes a variety of active reticular cells are present, some of them (1) have phagocytised foreign material (1a) and contain numerous lysosomal structures (1a) and large Golgi areas (1b)). Others are less active (2). (3) wandering interdig...electron microscopy; interdigitating cell; antigen-presenting cellPoja Histology Collection - Lymphatic Tissues and Organs Subset
94 Lymphoblast in splenic cord of red pulp (rat)Electron microscopy. A free circulating more matured lymphoblast with a conspicuous nucleus and nucleolus (1) still contains many polysomes (2), the swollen mitochondria (3) are obvious. A single fat droplet (4) and Golgi vesicles (5) are present. The cell is partly surrounded by reticular cell exte...electron microscopy; lymphoblastPoja Histology Collection - Lymphatic Tissues and Organs Subset
95 Medullary part of lymph node (human)Stain: Azan. Part of the medulla with darkly stained medullary cords (1) and lightly stained medullary sinuses (2). The cords are stuffed with densely packed lymphocytes and reticular cells. Their blue-stained structures indicate massive bundles of reticular fibres. The sinuses are lined by flattene...medulla; medullar cords; sinusPoja Histology Collection - Lymphatic Tissues and Organs Subset
96 Medullary cords and sinus in lymph node (mouse)Stain: Trichrome (Goldner). Detail of medullary sinus (1) flanked by part of medullar cords (2). The sinus space (1) is lined by flattened littoral cells (foamed cytoplasm) (?) and dispersedly filled with lymphocytes (4) and macrophages (brown hemo-pigment) (3). Within the medullary cords one finds ...medullar cords; medullar sinusPoja Histology Collection - Lymphatic Tissues and Organs Subset
97 Medulla of lymph node (human)Stain: Azan. Part of the medulla showing medullary cords (1) and medullary sinuses (2) close to the hilum and capsule (3). The medullary cords consist of a meshwork of reticular fibers and reticular cells (blue-stained). The cords (1) are more stuffed with lymphocytes and other blood cells. The sinu...medullar cords; medullar sinus; hilumPoja Histology Collection - Lymphatic Tissues and Organs Subset
98 Molluscum contagiosumPhotomicrograph showing cytopathic changes of pox virus (Molluscum contagiosum) in HIV patient.AIDSHEAL Reviewed Collection
99 Molluscum contagiosumPhotomicrograph showing cytopathic changes of pox virus (Molluscum contagiosum) in HIV patient.AIDSHEAL Reviewed Collection
100 Monthly Breast Self-Exam (Labeled)Monthly breast self-exam.Cancer ScreeningRoyal College of Surgeons in Ireland Illustrations
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