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Severe response to a foreign substance. signs develop acutely and may include swelling, blockage of airways, tachycardia and ptylism.
Anaphylaxis
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Any abnormal condition of the blood
Dyscrasia
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Material that has escaped from blood vessels and is high in protein, cells or solid materials derived from cells.
Exudate
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Excess blood in a part;engorgement
Hyperemia
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Disorder of unknown cause
Idiopathic disease
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A condition in which urine specific gravity approaches that of the glomerular filtrate
Isosthenuria
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Fragmentation of a cell nucleus
Karyorrhexis
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In hematology, an abnormally shaped RBC that appears to have horns.
Keratocyte
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Common term for an alteration in the distribution of leukocytes in which there are increases in band forms, usually in response to bacterial infection
Left shift
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RBC characterized by an increased membrane surface area relative to the cell volume
Leptocyte
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Production of WBCs
Leukopoiesis
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Inflammation of more or one lymph nodes
Lymphadenitis
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Bone marrow cell from which blood platelets arise
Megakaryocyte
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Life cycle stage of a protozoal parasite that results from asexual reproduction
Merozoite
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Form of Hgb containing oxidized iron; inefficient at oxygen transport
Methemoglobin
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Ciliated larval stage of a digenic trematode
Miracidium
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Bone marrow stem sell that gives rise to RBC precursors, platelet precursors and non-lymphocytic leukocytes
Myeloid cells
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Infestation with larvae (maggots) of dipterans
Myiasis
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The study of tumors
Oncology
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Resistant spore phase of some parasitic protozoans
Oocyst
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A lid or flap covering an opening; common structure on the eggs of some trematodes
Operculum
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Parallel arrangement of some species of bacteria; often described as looking like a picket fence
Palisade
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Condition in which female organisms produce eggs that develop without fertilization
Parthenogenic
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Infestation with lice
Pediculosis
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An inherited condition characterized by the appearance of bi-lobed neutrophils in a peripheral blood sample
Pelger-Huet anomaly
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Any abnormal cell shape
Poikilocytosis
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Increase frequency of urination
Pollakiuria
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The time intervals between infection with a parasite and demonstration of the infection
Prepatent period
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Segments that comprise the body of a cestode
Proglottid
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organisms with optimal growth at cold temperatures
psychrophiles
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Containing, discharging or causing the production of pus; cytology sample characterized by the presence of neutrophils representing more than 85% of total nucleated cells in a sample
Purulent
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Condensed nuclear chromatin in a degenerating cell
Pyknosis
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Cytology sample characterized by the presence of macrophages representing more than 15% of total nucleated cells in the sample
Pyogranulomatous
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Ocular micrometer disks that impose a calibrated image over the microscopic viewing area
Reticle
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An anuclear, immature RBC
Reticulocyte
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Fragmented RBCs usually formed as a result of shearing of the RBC by intravascular trauma
Schistocyte
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Life cycle stage of some protozoal organisms; arises form multiple asexual fission
Schizont
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The head of a cestode by which it attaches to its host
Scolex
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Blood condition in which pathogenic microorganisms and their toxins are present
Septicemia
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A WBC that has ruptured
Smudge cell
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Designed to measure the amount of light transmitted through a solution
Spectrophotometers
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Infective stage of some protozoal parasites
Sporozoite
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Common crystal seen in alkaline to slightly acidic urine; sometimes referred to as triple phosphate crystals or magnesium ammonium phosphate crystals
Struvite
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Organisms with optimal growth at elevated temperatures
Thermophiles
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Decrease in circulating platelets
Thrombocytopenia
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The greatest dilution at which a patiend sample no longer yields a positive result for the presence of a specific antibody
Titer
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Study of hazardous substances and their effects on health
Toxicology
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An effusion characterized by low protein concentration and low total nucleated cell counts
Transudate
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The motile form of a protozoal parasite
Trophozoite
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The principle end product of amino acid breakdown in mammals
urea
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metabolic by-product of nitrogen catabolism
uric acid
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Pigments that impart color to a urine sample
urochromes
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The presence of calculi (stones) in the urinary tract
Urolithiasis
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Any organisms that transmits a disease-causing organisms to new hosts
vector
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Common name for the larva of some species of flies; often in swollen cystlike subcutaneous sites, with a fistula or pore communicating to the outside environment
Warble
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A disease that is transmitted from a nonhuman animal to a human being
Zoonotic infection
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