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Olfactory Receptor Neurons
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D018034 |
[Neurons in the OLFACTORY EPITHELIUM with proteins (RECEPTORS, ODORANT) that bind, and thus detect, odorants. These neurons send their DENDRITES to the surface of the epithelium with the odorant receptors residing in the apical non-motile cilia. Their unmyelinated AXONS synapse in the OLFACTORY BULB of the BRAIN.
] |
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Olfactory Tubercle
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D066208 |
[Region in the ventral TELENCEPHALON located anterior to the OPTIC CHIASM, posterior to the OLFACTORY PEDUNCLE, rostral to the PIRIFORM AREA and ventral to the NUCLEUS ACCUMBENS.
] |
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Oligo-1,6-Glucosidase
|
D009834 |
[An enzyme that catalyzes the endohydrolysis of 1,6-alpha-glucosidic linkages in isomaltose and dextrins produced from starch and glycogen by ALPHA-AMYLASES. EC 3.2.1.10.
] |
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Oligochaeta
|
D009835 |
[A class of annelid worms with few setae per segment. It includes the earthworms such as Lumbricus and Eisenia.
] |
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Oligoclonal Bands
|
D043025 |
[Multiple protein bands serving as markers of specific ANTIBODIES and detected by ELECTROPHORESIS of CEREBROSPINAL FLUID or serum. The bands are most often seen during inflammatory or immune processes and are found in most patients with MULTIPLE SCLEROSIS.
] |
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Oligodendrocyte Precursor Cells
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D000073637 |
[Neuroglial cells that first appear during mid-embryogenesis in the central nervous system of mammals and give rise to OLIGODENDROCYTES. Mitotically-active populations remain through late adulthood and are capable of regenerating MYELIN lost to disease or injury.
] |
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Oligodendrocyte Transcription Factor 2
|
D000076104 |
[A basic helix-loop-helix transcription factor that is required for differentiation of OLIGODENDROCYTES and motor neurons in the spinal cord, and development of somatic motor neurons in the hindbrain.
] |
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Oligodendrocyte-Myelin Glycoprotein
|
D063345 |
[A glycosylated extracellular myelin protein found on the MYELIN SHEATH of the CENTRAL NERVOUS SYSTEM. It is linked to the cell surface via a GLYCOSYLPHOSPHATIDYLINOSITOL LINKAGE.
] |
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Oligodendroglia
|
D009836 |
[A class of large neuroglial (macroglial) cells in the central nervous system. Oligodendroglia may be called interfascicular, perivascular, or perineuronal (not the same as SATELLITE CELLS, PERINEURONAL of GANGLIA) according to their location. They form the insulating MYELIN SHEATH of axons in the central nervous system.
] |
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Oligodendroglioma
|
D009837 |
[A relatively slow-growing glioma that is derived from oligodendrocytes and tends to occur in the cerebral hemispheres, thalamus, or lateral ventricle. They may present at any age, but are most frequent in the third to fifth decades, with an earlier incidence peak in the first decade. Histologically, these tumors are encapsulated, relatively avascular, and tend to form cysts and microcalcifications. Neoplastic cells tend to have small round nuclei surrounded by unstained nuclei. The tumors may vary from well-differentiated to highly anaplastic forms. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2052; Adams et al., Principles of Neurology, 6th ed, p655)
] |
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Oligodeoxyribonucleotides
|
D009838 |
[A group of deoxyribonucleotides (up to 12) in which the phosphate residues of each deoxyribonucleotide act as bridges in forming diester linkages between the deoxyribose moieties.
] |
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Oligodeoxyribonucleotides, Antisense
|
D020319 |
[Short fragments of DNA that are used to alter the function of target RNAs or DNAs to which they hybridize.
] |
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Oligohydramnios
|
D016104 |
[A condition of abnormally low AMNIOTIC FLUID volume. Principal causes include malformations of fetal URINARY TRACT; FETAL GROWTH RETARDATION; GESTATIONAL HYPERTENSION; nicotine poisoning; and PROLONGED PREGNANCY.
] |
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Oligohymenophorea
|
D016802 |
[A class of ciliate protozoa. Characteristics include the presence of a well developed oral apparatus and oral cilia being clearly distinct from somatic cilia.
] |
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Oligomenorrhea
|
D009839 |
[Abnormally infrequent menstruation.
] |
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Oligomycins
|
D009840 |
[A closely related group of toxic substances elaborated by various strains of Streptomyces. They are 26-membered macrolides with lactone moieties and double bonds and inhibit various ATPases, causing uncoupling of phosphorylation from mitochondrial respiration. Used as tools in cytochemistry. Some specific oligomycins are RUTAMYCIN, peliomycin, and botrycidin (formerly venturicidin X).
] |
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Oligonucleotide Array Sequence Analysis
|
D020411 |
[Hybridization of a nucleic acid sample to a very large set of OLIGONUCLEOTIDE PROBES, which have been attached individually in columns and rows to a solid support, to determine a BASE SEQUENCE, or to detect variations in a gene sequence, GENE EXPRESSION, or for GENE MAPPING.
] |
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Oligonucleotide Probes
|
D015345 |
[Synthetic or natural oligonucleotides used in hybridization studies in order to identify and study specific nucleic acid fragments, e.g., DNA segments near or within a specific gene locus or gene. The probe hybridizes with a specific mRNA, if present. Conventional techniques used for testing for the hybridization product include dot blot assays, Southern blot assays, and DNA:RNA hybrid-specific antibody tests. Conventional labels for the probe include the radioisotope labels 32P and 125I and the chemical label biotin.
] |
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Oligonucleotides
|
D009841 |
[Polymers made up of a few (2-20) nucleotides. In molecular genetics, they refer to a short sequence synthesized to match a region where a mutation is known to occur, and then used as a probe (OLIGONUCLEOTIDE PROBES). (Dorland, 28th ed)
] |
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Oligonucleotides, Antisense
|
D016376 |
[Short fragments of DNA or RNA that are used to alter the function of target RNAs or DNAs to which they hybridize.
] |
