151 - 175 of 4,589
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TitleDescriptionSubjectCollection
151 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
152 Plasma cell in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). (1) A plasma cell with vacuoles (containing Ig), basophilic cytoplasm and a clear halo (Golgi apparatus) in a bone marrow film. (2) represents a young polychromatic erythroblast. (3) neutrophilic myelocyte, and (4) is a cluster of platelets.Poja Histology Collection - Blood & Bone Marrow Subset
153 Monocyte in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). The monocyte (12-20 μm) contains a large light-stained nucleus with a characteristic indentation with a distinct nucleolus in a light blue-stained apparently transparent cytoplasm. Small primary or azurophilic granules are hardly visible.Poja Histology Collection - Blood & Bone Marrow Subset
154 Peroxidase activity in neutrophilic myelocyte (postnatal liver, rat)Electron microscopy (peroxidase reaction with diaminobenzidin staining). An early neutrophilic myelocyte with a large nucleus and well developed organelles, distinct Golgi areas (3) and granules. The Golgi areas, rough endoplasmic reticulum and nuclear membrane stain positively (species-dependent), ...Poja Histology Collection - Blood & Bone Marrow Subset
155 (Pro)myelocyte and neutrophilic granulocytes in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The promyelocyte (1) contains coarse primary, azurophilic granules in the basophilic cytoplasm. The absence of nucleoli indicates the late stage of the promyelocyte. (2) segmented neutrophilic granulocyte with toxic granulation (large irregular granules). (3) indicat...Poja Histology Collection - Blood & Bone Marrow Subset
156 Maturation stages of plasmablasts (spleen, liver rat)Electron microscopy. The youngest (plasmacytoid) lymphocyte in (A) shows a slight indented nucleus with a distinct nucleolus. Apart from a few mitochondria the cytoplasm contains large amount of free ribosomes and polysomes, few profiles of long rough endoplasmic reticulum (1, RER) and Golgi areas (...Poja Histology Collection - Blood & Bone Marrow Subset
157 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
158 Anisocytosis of erythrocytes in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). (A) shows normal human erythrocytes in a blood film, while (B) shows anisocytosis. The small cells are called microcytes. Anisocytosis is an increase in the variability of erythrocyte size beyond that which is observed in a normal healthy subject. It is a common, non...Poja Histology Collection - Blood & Bone Marrow Subset
159 Normal pleiomorph and leukemic monomorph bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). In normal bone marrow smear (A) a pleimorph or heterogeneous collection of different cell types (A1-7) can be identified, while in the bone marrow smear of a leukemic patient a single type dominates (in this case lymphoid cells, B-1).Poja Histology Collection - Blood & Bone Marrow Subset
160 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
161 Reticulocytosis in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). The slightly pale blue stained cells (1) represent the reticulocytes. These young red blood cells are stained bluish because of the presence of ribosomal RNA.Poja Histology Collection - Blood & Bone Marrow Subset
162 Mitosis in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). Increased mitotic activity can be observed in megaloblastic anemia. (1) Mitosis figure. (2) Basophilic erythroblasts.Poja Histology Collection - Blood & Bone Marrow Subset
163 Mast cell (connective tissue, human)Electron microscopy. Mast cells (mastocytes) are frequently found perivascularly or perineurally within the connective tissue. A detail of this mast cell shows granules varying in shape and size. These membrane-bound vesicles (so-called compound granules) show a metachromatic reaction in light micro...Poja Histology Collection - Blood & Bone Marrow Subset
164 Neutrophilic metamyelocyteScheme electron microscopy. From CFU-S (colony forming units-spleen) stem cells arise CFU-GM (colony forming unit-granulocyte/monocyte) stem cells. The latter divide by mitoses and differentiate via promyeloblasts and myeloblasts into neutrophilic myelocytes (the last proliferative stage). The next ...Poja Histology Collection - Blood & Bone Marrow Subset
165 Band-form of neutrophilic granulocyte (peripheral blood, human)Electron microscopy. Transition from late metamyelocyte to band form (9-12 μm). These are the earliest stages of the motile two-lobed neutrophilic granulocytes. (1) a slightly bended nucleus with a nucleolus. (2) Golgi area. Apart from a few mitochondria (3) and profiles of rough endoplasmic retic...Poja Histology Collection - Blood & Bone Marrow Subset
166 Endocytosis in lymphocyte (peripheral blood, rat)Electron microscopy. Thorotrast is a suspension of thorium dioxide particles and was formerly used as a contrast medium in X-ray diagnostics. These particles were found to accumulate in spleen, lymph nodes and most likely in macrophages and phagocytizing reticular cells. Generally lymphocytes do not...Poja Histology Collection - Blood & Bone Marrow Subset
167 Basophilic erythroblast, plasmacytoid lymphocyte and neutrophilic granulocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The basophilic erythroblast (1) contains a large, partly condensed but transparent nucleus with a distinct nucleolus. The cytoplasm is strong basophilic. The plasmacytoid lymphocyte (2) or activated B cell is much smaller and less basophilic. The young neutrophil (3)...Poja Histology Collection - Blood & Bone Marrow Subset
168 Myeloblast, neutrophilic granulocyte and lymphocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The myeloblast (1) measures 12-20 m with 1-5 prominent nucleoli and fine diffuse chromatin. The slightly pale blue cytoplasm contains sometimes a few azurophilic granules (primary granules). (2) Indicates two segmented neutrophilic granulocytes with 3-5 nuclear lobes...Poja Histology Collection - Blood & Bone Marrow Subset
169 Aggregation of platelets (liver, rat)Electron microscopy. Within a liver sinusoid (S) close to a small bile ductile (B) in the periportal area of the liver some erythocytes (E) and an aggregation of platelets (3) are present. (2) represents the space of Disse to which the liver parenchyma cells border (1). These disc-shaped anucleate p...Poja Histology Collection - Blood & Bone Marrow Subset
170 Toxic granulation and vacuolation in neutrophilic myelocytes in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). The myelocyte (1) and the metamyelocyte (2) show toxic granulation and vacuolation and cytoplasmic swelling. Vacuoles may represent the terminal stage of autophagocytosis. Granules may burst and their contents undergo autophagocytosis in a number of pathologic condit...Poja Histology Collection - Blood & Bone Marrow Subset
171 Nucleated erythrocytes in peripheral blood smear (bird)Stain: May-Grnwald-Giemsa (MGG). In contrast to human red blood cells mature erythrocytes of birds contain nuclei (1). (2) Indicates an eosinophilic granulocyte. Inset demonstrates chromatin pattern of the nuclei.Poja Histology Collection - Blood & Bone Marrow Subset
172 Mast cell (lung, golden hamster)Electron microscopy. Mucosa mast cells (mastocytes) are frequently found perivascularly or perineurally. The mast cell shows long thin microvilli at the surface and the cytoplasm is stuffed with granules (1) varying in shape and size. At (2) a Golgi area and at (3) small mitochondria and some electr...Poja Histology Collection - Blood & Bone Marrow Subset
173 Myeloblast and promyelocyte in bone marrow smear (human)Stain: May-Grnwald-Giemsa (MGG). The myeoloblast (1) measures 12-20 m and has a high nucleus-cytoplasm ratio and a round to oval nucleus. The nucleus has a fine disperse diffuse chromatin and one to five prominent nucleoli. The cytoplasm is pale blue (basophilic) with no or only scarce numbers of az...Poja Histology Collection - Blood & Bone Marrow Subset
174 Neutrophilic granulocyte and monocyte in peripheral blood smear (human)Stain: May-Grnwald-Giemsa (MGG). (1) the neutrophil (12-15 μm) shows a dark-stained partly lobulated nucleus with the smaller lobe connected by a fine strand of chromatin to the larger nuclear part. The cytoplasm reveals very faintly small azurophilic (primary) granules. (2) the monocyte (12-20 μm...Poja Histology Collection - Blood & Bone Marrow Subset
175 PlasmablastScheme electron microscopy. This plasmablast (up to 20 μm) shows an indented large nucleus (1) and a distinct nucleolus (2). In addition to free ribosomes long profiles of rough endoplasmic reticulum (RER) (3) are being developed concomitant with Golgi packages (4). The cytoplasm is scanty with few...Poja Histology Collection - Blood & Bone Marrow Subset
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