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monoclonal_antibody
any of a class of antibodies produced in the laboratory by a single clone of cells or a cell line and consisting of identical antibody molecules
monoclonal_antibody: any of a class of antibodies produced in the laboratory by a single clone of cells or a cell line and consisting of identical antibody molecules
infliximab
a monoclonal antibody (trade name Remicade) used to treat Crohn's disease and rheumatoid arthritis; administered by infusion; use and dosage must be determined by a physician
infliximab: a monoclonal antibody (trade name Remicade) used to treat Crohn's disease and rheumatoid arthritis; administered by infusion; use and dosage must be determined by a physician
opsonin
an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes
opsonin: an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes
immunoglobulin
a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response
immunoglobulin: a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response
immunoglobulin_A
one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts
immunoglobulin_A: one of the most common of the five major classes of immunoglobulins; the chief antibody in the membranes of the gastrointestinal and respiratory tracts
immunoglobulin_D
one of the five major classes of immunoglobulins; present in blood serum in small amounts
immunoglobulin_D: one of the five major classes of immunoglobulins; present in blood serum in small amounts
immunoglobulin_E
one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes
immunoglobulin_E: one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes
reagin
an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy
reagin: an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy
immunoglobulin_G
one of the five major classes of immunoglobulins; the main antibody defense against bacteria
immunoglobulin_G: one of the five major classes of immunoglobulins; the main antibody defense against bacteria
immunoglobulin_M
one of the five major classes of immunoglobulins; involved in fighting blood infections and in triggering production of immunoglobulin G
immunoglobulin_M: one of the five major classes of immunoglobulins; involved in fighting blood infections and in triggering production of immunoglobulin G
tetanus_immunoglobulin
sterile solution of globulins derived from the blood plasma of a person who has been immunized for tetanus; provides short-term immunization against tetanus in cases of possible exposure to the tetanus bacillus
tetanus_immunoglobulin: sterile solution of globulins derived from the blood plasma of a person who has been immunized for tetanus; provides short-term immunization against tetanus in cases of possible exposure to the tetanus bacillus
poison
any substance that causes injury or illness or death of a living organism
poison: any substance that causes injury or illness or death of a living organism
chemical_irritant
a substance producing irritation
chemical_irritant: a substance producing irritation
capsaicin
colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno
capsaicin: colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno
gingerol
derived from ginger; source of the hotness of ginger
gingerol: derived from ginger; source of the hotness of ginger
piperin
derived from pepper (especially black pepper); source of the hotness of black and white pepper
piperin: derived from pepper (especially black pepper); source of the hotness of black and white pepper
isothiocyanate
a family of compounds derived from horseradish and radishes and onions and mustards; source of the hotness of those plants and preparations
isothiocyanate: a family of compounds derived from horseradish and radishes and onions and mustards; source of the hotness of those plants and preparations
fetoprotein
any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
fetoprotein: any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
alpha_fetoprotein
an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
alpha_fetoprotein: an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
toxin
a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
toxin: a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
anatoxin
a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin
anatoxin: a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin
animal_toxin
a toxin resembling bacterial toxins in its antigenic properties that is found in the fluids of certain animals
animal_toxin: a toxin resembling bacterial toxins in its antigenic properties that is found in the fluids of certain animals
bacterial_toxin
any endotoxin or exotoxin formed in or elaborated by bacterial cells
bacterial_toxin: any endotoxin or exotoxin formed in or elaborated by bacterial cells
botulin
potent bacterial toxin produced by the bacterium Clostridium botulinum that causes botulism; can be used as a bioweapon
botulin: potent bacterial toxin produced by the bacterium Clostridium botulinum that causes botulism; can be used as a bioweapon
cytotoxin
any substance that has a toxic effect on cells
cytotoxin: any substance that has a toxic effect on cells
endotoxin
a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die
endotoxin: a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die
enterotoxin
a cytotoxin specific for the cells of the intestinal mucosa
enterotoxin: a cytotoxin specific for the cells of the intestinal mucosa
exotoxin
a toxin that is secreted by microorganisms into the surrounding medium
exotoxin: a toxin that is secreted by microorganisms into the surrounding medium
mephitis
a poisonous or foul smelling gas emitted from the earth
mephitis: a poisonous or foul smelling gas emitted from the earth
hepatotoxin
any toxin that affects the liver
hepatotoxin: any toxin that affects the liver
nephrotoxin
any toxin that affects the kidneys
nephrotoxin: any toxin that affects the kidneys
neurotoxin
any toxin that affects neural tissues
neurotoxin: any toxin that affects neural tissues
mycotoxin
a toxin produced by a fungus
mycotoxin: a toxin produced by a fungus
plant_toxin
any substance produced by plants that is similar in its properties to extracellular bacterial toxin
plant_toxin: any substance produced by plants that is similar in its properties to extracellular bacterial toxin
venom
toxin secreted by animals; secreted by certain snakes and poisonous insects (e.g., spiders and scorpions)
venom: toxin secreted by animals; secreted by certain snakes and poisonous insects (e.g., spiders and scorpions)
kokoi_venom
a potent neurotoxin found in a particular frog
kokoi_venom: a potent neurotoxin found in a particular frog
snake_venom
venom secreted by certain snakes
snake_venom: venom secreted by certain snakes
antigen
any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
antigen: any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
antigenic_determinant
the site on the surface of an antigen molecule to which an antibody attaches itself
antigenic_determinant: the site on the surface of an antigen molecule to which an antibody attaches itself
rhesus_factor
a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia
rhesus_factor: a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia
sap
a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant
sap: a watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant
scabicide
a drug that destroys the itch mite that causes scabies
scabicide: a drug that destroys the itch mite that causes scabies
sewer_gas
foul-smelling gas that forms in sewers
sewer_gas: foul-smelling gas that forms in sewers
shale
a sedimentary rock formed by the deposition of successive layers of clay
shale: a sedimentary rock formed by the deposition of successive layers of clay
humic_shale
shale that is rich in humic acids
humic_shale: shale that is rich in humic acids
oil_shale
shale from which oil can be obtained by heating
oil_shale: shale from which oil can be obtained by heating
shale_oil
oil extracted from oil shale by heating
shale_oil: oil extracted from oil shale by heating
shark_oil
a fatty yellow to brown oil obtained from the livers of sharks; used for dressing leather and as a source of vitamin A
shark_oil: a fatty yellow to brown oil obtained from the livers of sharks; used for dressing leather and as a source of vitamin A
sheep_dip
a liquid mixture containing pesticides in which sheep are dipped to kill parasites
sheep_dip: a liquid mixture containing pesticides in which sheep are dipped to kill parasites
Shetland_wool
a wool obtained from sheep of the Shetland islands
Shetland_wool: a wool obtained from sheep of the Shetland islands
shingle
building material used as siding or roofing
shingle: building material used as siding or roofing
shoe_polish
a substance used to produce a shiny protective surface on footwear
shoe_polish: a substance used to produce a shiny protective surface on footwear
shot_metal
an alloy that is 98% lead and 2% arsenic; used in making small shot
shot_metal: an alloy that is 98% lead and 2% arsenic; used in making small shot
siderite
iron ore in the form of ferrous carbonate
siderite: iron ore in the form of ferrous carbonate
silicic_acid
a jellylike substance (hydrated silica)
silicic_acid: a jellylike substance (hydrated silica)
silicate
a salt or ester derived from silicic acid
silicate: a salt or ester derived from silicic acid
silicide
any of various compounds of silicon with a more electropositive element or radical
silicide: any of various compounds of silicon with a more electropositive element or radical
silicon_carbide
an extremely hard blue-black crystalline compound (SiC) used as an abrasive and a heat refractory material; crystals of silicon carbide can be used as semiconductors
silicon_carbide: an extremely hard blue-black crystalline compound (SiC) used as an abrasive and a heat refractory material; crystals of silicon carbide can be used as semiconductors
silicone
any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation
silicone: any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation
silicone_resin
a polymeric silicone compound
silicone_resin: a polymeric silicone compound
siloxane
any of a large class of compounds that have alternate silicon and oxygen atoms
siloxane: any of a large class of compounds that have alternate silicon and oxygen atoms
siding
material applied to the outside of a building to make it weatherproof
siding: material applied to the outside of a building to make it weatherproof
silex
a pure form of finely ground silica
silex: a pure form of finely ground silica
silica
a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
silica: a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
silica_gel
a porous form of silica that is highly absorbent
silica_gel: a porous form of silica that is highly absorbent
silicon_bronze
a bronze with 2-3% silicon that is resistant to corrosion
silicon_bronze: a bronze with 2-3% silicon that is resistant to corrosion
silk
animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders
silk: animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders
silt
mud or clay or small rocks deposited by a river or lake
silt: mud or clay or small rocks deposited by a river or lake
siltstone
a fine-grained sandstone of consolidated silt
siltstone: a fine-grained sandstone of consolidated silt
silvex
a herbicide that is effective in controlling woody plants but is toxic to animals
silvex: a herbicide that is effective in controlling woody plants but is toxic to animals
simazine
a herbicide used to control weeds (especially among crops)
simazine: a herbicide used to control weeds (especially among crops)
Simoniz
a brand of car polish
Simoniz: a brand of car polish
sisal
a plant fiber used for making rope
sisal: a plant fiber used for making rope
ski_wax
wax used on the bottom of skis
ski_wax: wax used on the bottom of skis
slag
the scum formed by oxidation at the surface of molten metals
slag: the scum formed by oxidation at the surface of molten metals
slate
thin layers of rock used for roofing
slate: thin layers of rock used for roofing
smaltite
a grey mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel
smaltite: a grey mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel
slush
partially melted snow
slush: partially melted snow
smelling_salts
a pungent preparation of ammonium carbonate and perfume; sniffed as a stimulant to relieve faintness
smelling_salts: a pungent preparation of ammonium carbonate and perfume; sniffed as a stimulant to relieve faintness
snake_oil
(medicine) any of various liquids sold as medicine (as by a travelling medicine show) but medically worthless
snake_oil: (medicine) any of various liquids sold as medicine (as by a travelling medicine show) but medically worthless
snow
a layer of snowflakes (white crystals of frozen water) covering the ground
snow: a layer of snowflakes (white crystals of frozen water) covering the ground
snuff
the charred portion of a candlewick
snuff: the charred portion of a candlewick
corn_snow
granular snow formed by alternate thawing and freezing
corn_snow: granular snow formed by alternate thawing and freezing
crud
heavy wet snow that is unsuitable for skiing
crud: heavy wet snow that is unsuitable for skiing
soapstone
a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments
soapstone: a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments
soda_lime
a mixture of sodium and calcium hydroxides; absorbs liquids and gases
soda_lime: a mixture of sodium and calcium hydroxides; absorbs liquids and gases
sodalite
a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks
sodalite: a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks
sodium_carbonate
a sodium salt of carbonic acid; used in making soap powders and glass and paper
sodium_carbonate: a sodium salt of carbonic acid; used in making soap powders and glass and paper
sodium_carboxymethyl_cellulose
a gummy substance that is a sodium salt of carboxymethyl cellulose; used as a thickening or emulsifying agent
sodium_carboxymethyl_cellulose: a gummy substance that is a sodium salt of carboxymethyl cellulose; used as a thickening or emulsifying agent
sodium_fluoride
a colorless crystalline salt of sodium (NaF) used in fluoridation of water and to prevent tooth decay
sodium_fluoride: a colorless crystalline salt of sodium (NaF) used in fluoridation of water and to prevent tooth decay
sodium_hydride
a flammable grey crystalline binary compound (NaH)
sodium_hydride: a flammable grey crystalline binary compound (NaH)
sodium_hypochlorite
an unstable salt (NaOCl) used as a bleaching agent and disinfectant
sodium_hypochlorite: an unstable salt (NaOCl) used as a bleaching agent and disinfectant
sodium_iodide
a crystalline salt used like potassium iodide
sodium_iodide: a crystalline salt used like potassium iodide
sodium_lauryl_sulphate
a caustic detergent useful for removing grease; although commonly included in personal care items (shampoos and toothpastes etc.) it can irritate skin and should not be swallowed
sodium_lauryl_sulphate: a caustic detergent useful for removing grease; although commonly included in personal care items (shampoos and toothpastes etc.) it can irritate skin and should not be swallowed
sodium_pyrophosphate
a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents
sodium_pyrophosphate: a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents
sodium_sulphate
a solid white bitter salt used in manufacturing glass and paper and dyes and pharmaceuticals
sodium_sulphate: a solid white bitter salt used in manufacturing glass and paper and dyes and pharmaceuticals
sodium_tripolyphosphate
a sodium salt of triphosphoric acid used as a builder in soaps and detergents
sodium_tripolyphosphate: a sodium salt of triphosphoric acid used as a builder in soaps and detergents
sodium_phosphate
phosphate of sodium; used as a laxative to cleanse the bowels
sodium_phosphate: phosphate of sodium; used as a laxative to cleanse the bowels
soft_water
water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap)
soft_water: water that is not hard (does not contain mineral salts that interfere with the formation of lather with soap)
solid
matter that is solid at room temperature and pressure
solid: matter that is solid at room temperature and pressure