Histology

thumb|Histologic specimen being placed on the stage of an optical microscope right|300px|thumb|Human lung tissue stained with [[hematoxylin and eosin as seen under a microscope]]

middle layer of the heart wall, which consists of cardiac muscle

thumb|400px|Diagram showing the development of different blood cells from haematopoietic stem cell to mature cells Haematopoiesis (; ; also hematopoiesis in American English, sometimes h(a)emopoiesis) is the formation of blood cellular components. All cellular blood components are derived from haematopoietic stem cells. In a healthy adult human, roughly ten billion () to a hundred billion () new blood cells are produced per day, in order to maintain steady state levels in the peripheral circulation.

chemical compound

photoreceptor cells that can function in lower light better than cone cells.

temporary endocrine structure in ovaries producing progesterone, estradiol and inhibin A; the remains of an ovarian follicle that has released an egg

specialized type of cell found in the retina that is capable of visual phototransduction

thumb|230px|Main staining patterns on chromogenic immunohistochemistry. thumb|right|Immunofluorescence of human skin using an anti-IgA antibody. The skin is from a patient with [[Henoch–Schönlein purpura: IgA deposits are found in the walls of small superficial capillaries (yellow arrows). The pale wavy green area on top is the epidermis, the bottom fibrous area is the dermis.]] thumb|"Block" staining: strong nuclear and cytoplasmic expression in a continuous segment of cells. Immunohistochemistry is a form of immunostaining. It involves the process of selectively identifying antigens in cells

A microtome (from the Greek mikros, meaning "small", and temnein, meaning "to cut") is a cutting tool used to produce extremely thin slices of material known as sections, with the process being termed microsectioning. Important in science, microtomes are used in microscopy for the preparation of samples for observation under transmitted light or electron radiation.

A syncytium (; : syncytia; from Greek: σύν syn "together" and κύτος kytos "box, i.e. cell") (also syncyitium) or symplasm is a multinucleate cell that can result from multiple cell fusions of uninuclear cells (i.e., cells with a single nucleus), in contrast to a coenocyte, which can result from multiple nuclear divisions without accompanying cytokinesis. The muscle cell that makes up animal skeletal muscle is a classic example of a syncytium cell. The term may also refer to cells interconnected by specialized membranes with gap junctions, as seen in the heart muscle cells and certain smooth mu

thin layer of dense material found in tissues between cells and the adjacent connective tissue

growth of tissues or cells in an artificial medium separate from the parent organism. This technique is also called micropropagation

type of neuron located near the inner surface (ganglion cell layer) of the retina of the eye

a thin sheet of proteoglycans and glycoproteins, especially laminin, secreted by cells as an extracellular matrix.

cell type

Histogenesis is the formation of different tissues from undifferentiated cells. These cells are constituents of three primary germ layers, the endoderm, mesoderm, and ectoderm. The science of the microscopic structures of the tissues formed within histogenesis is termed histology.

thin layer of connective tissue that forms part of the moist linings known as mucous membranes

Choanocytes (also known as "collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body types of sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane.

preservation of biological tissue

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type of neuron

thumb|The human cerebral cortex divided into Brodmann areas on the basis of cytoarchitecture.|page=145 Cytoarchitecture (from Greek κύτος 'cell' and ἀρχιτεκτονική 'architecture'), also known as cytoarchitectonics, is the study of the cellular composition of the central nervous system's tissues under the microscope. Cytoarchitectonics is one of the ways to parse the brain, by obtaining sections of the brain using a microtome and staining them with chemical agents which reveal where different neurons are located.

anatomical entity

chemical compound

structure derived from the corpus luteum

muscle arise from annular tendon is medial rectus,superior rectus,inferior rectus and lateral rectus

69px|thumb|Basophilic 69px|thumb|Eosonophilic 69px|thumb|Neutrophilic A metamyelocyte is a cell undergoing granulopoiesis, derived from a myelocyte, and leading to a band cell.

neuron in the retina of the mammalian eye

Structures in the pituitary gland

thumb | right | alt=A bioluminescent Ctenophore. | A bioluminescent Ctenophore.Colloblasts are unique, multicellular structures found in ctenophores. They are widespread in the tentacles of these animals and are used to capture prey. Colloblasts consist of a collocyte containing a coiled spiral filament, internal granules and other organelles.

location in liver between hepatocyte and sinusoid

Pituicytes are glial cells of the posterior pituitary. Their main role is to assist in the storage and release of neurohypophysial hormones.

Stereocilia (or stereovilli or villi) are non-motile apical cell modifications. They are distinct from cilia and microvilli, but are closely related to microvilli. They form single "finger-like" projections that may be branched, with normal cell membrane characteristics. They contain actin. Stereocilia are found in the vas deferens, the epididymis, and the sensory cells of the inner ear.

thumb|upright|Main staining types when using H&E stain|hematoxylin and eosin (H&E). thumb|upright|A basophil granulocyte is surrounded by lightly staining eosinophilic [[erythrocytes in an H&E staining.]]

extracellular non-fibrous substance

The costamere is a structural-functional component of striated muscle cells which connects the sarcomere of the muscle to the cell membrane (i.e. the sarcolemma).

Lymphopoiesis (lĭm'fō-poi-ē'sĭs) (or lymphocytopoiesis) is the generation of lymphocytes, one of the five types of white blood cells (WBCs). It is more formally known as lymphoid hematopoiesis.

thumb|Main staining types when using hematoxylin and eosin (H&E). thumb|A Basophil granulocyte stains dark purple upon H&E staining. Basophilic is a technical term used by pathologists. It describes the appearance of cells, tissues and cellular structures as seen through the microscope after a histological section has been stained with a basic dye. The most common such dye is haematoxylin.

chemical compound

biological stain of connective tissue

thumb|right | alt=Hyaline cartilage coloured with the toluidine blue, in which you can observe a strong metachromasia of the ground substance. View through optical microscope, 40x magnification. | Hyaline cartilage coloured with the toluidine blue: a strong metachromasia of the ground substance can be observed. View through optical microscope, 40x magnification. Metachromasia (var. metachromasy) is a characteristic change in the color of staining carried out in biological tissues, exhibited by certain dyes when they bind to particular substances present in these tissues, called chromotropes. F

Sclerochronology is the study of periodic physical and chemical features in the hard tissues of animals that grow by accretion, including invertebrates and coralline red algae, and the temporal context in which they formed. It is particularly useful in the study of marine paleoclimatology. The term was coined in 1974 following pioneering work on nuclear test atolls by Knutson and Buddemeier and comes from the three Greek words skleros (hard), chronos (time) and logos (science), which together refer to the use of the hard parts of living organisms to order events in time. It is, therefore, a fo

thumb|Immunocytochemistry labels individual proteins within cells, such as Tyrosine hydroxylase|TH (green) in the [[axons of sympathetic autonomic neurons.]]

histological technique

technology in cultivation

family of related stains for examination of blood including the detection of parasites

Reticulocytosis is a laboratory finding in which the number of reticulocytes (immature red blood cells) in the bloodstream is elevated. Reticulocytes account for approximately 0.5% to 2.5% of the total red blood cells in healthy adults and 2% to 6% in infants, but in reticulocytosis, this percentage rises. Reticulocytes are produced in the bone marrow and then released into the bloodstream, where they mature into fully developed red blood cells between 1-2 days. Reticulocytosis often reflects the body's response to conditions rather than an independent disease process and can arise from a vari

cell undergoing formation into granulocyte

In biology, a tubule is a general term referring to small tube or similar type of structure. Specifically, tubule can refer to: a small tube or fistular structure a minute tube lined with glandular epithelium any hollow cylindrical body structure a minute canal found in various structures or organs of the body a slender elongated anatomical channel a minute tube, especially as an anatomical structure.

particular staining pattern of cells and tissues when using haematoxylin and eosin stains

Variability in the size and shape of a cell or nucleus

Biocytin is a chemical compound that is an amide formed from the vitamin biotin and the amino acid L-lysine. As an intermediate in the metabolism of biotin, biocytin occurs naturally in blood serum and urine.

medical condition

'''p-Dimethylaminocinnamaldehyde (DMACA''') is an aromatic hydrocarbon. It is used in an acidic solution to detect indoles.

peripheral chemoreceptor, mainly located in the carotid bodies and aortic bodies, that helps the body regulate breathing

The respiratory system process driven by motile cilia on epithelial cells of the respiratory tract by which mucus and associated inhaled particles and pathogens trapped within it are moved out of the airways

anterior pituitary cells which stain red to acidic dye

protein-coding gene in the species Homo sapiens

stain utilized in histology