LD50

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Related to LD50: LC50

LD50

median lethal dose

The average amount of a drug, toxin, chemical substance/mixture or microorganism capable of killing 1/2 of the test animals exposed under specific test conditions. Median lethal dose (LD50) is commonly expressed in mg/kg, by oral intake or skin exposure.

LD₅₀

Lethal dose₅₀, median lethal dose The radiation dose that is lethal to 50% of those exposed–2.5-6.0 Gy, assuming that optimal care—ie transfusions, trauma and nursing care, antibiotics and nutrition—is available

LD₅₀

In pharmacology, a dose that proves lethal to 50% of a given population.

LD50

The dose of a poison that kills half the subjects exposed to it. Used as a measure of the toxicity of drugs and other substances.

LD₅₀

see LETHAL DOSE.

LD₅₀

Dosage of drug or numbers of microorganisms or other pathogens that kills 50% of a test population.

LD50,

n See dose, lethal, median.

LD₅₀

median lethal dose; the dose that will kill 50% of the tested group.

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References in periodicals archive ?

In the present findings LD50 for earthworms was found to be 0.

TOXICITY OF IMIDACLOPRID (NICOTINOID) AGAINST EARTHWORM, PHERETIMA POSTHUMA WITH REFERENCE TO ITS EFFECTS ON PROTEIN

Effects of LD50 dose of Black Pakistani Cobra venom on Erythrogram in envenomated mice.

BIO-PHYSIOLOGICAL EFFECTS OF LD50 OF CRUDE VENOM OF BLACK PAKISTANI COBRA (Naja Naja karachiensis) IN MICE

Animals: 30 male CF1 mouse (10-12 weeks old) were intraperitoneally (ip) injected with 1/12 of the LD50 (240 mg/Kg body weight) of commercial Malathion (95,2% w/v); Anasac, Santiago, Chile [CAS 16.

Dano testicular en el raton ocasionado por malathion

The LD50 value was determined for all applied doses.

EFFECT OF DIFFERENT PROPAGATION TECHNIQUES AND GAMMA IRRADIATION ON MAJOR STEVIOL GLYCOSIDE'S CONTENT IN STEVIA REBAUDIANA

The data were analyzed with a Finney computer program to determine the LD50 values.

Fixed Oil Composition and Biological Screening of Viola betonicifolia in Different Solvents

LD50 and LT50 values were calculated using log-probit regression analysis.

Susceptibility of Adult Bactocera dorsalis (Diptera: Tephritidae) to Commonly Used Chemical Insecticides

LD50 (the concentration/dose that kills 50 % of the treated animals) was 1397 mg/kg with 95 % confidence limit (1139 mg/kg 1714 mg/kg) calculated with trimmed spearman-karber (TSK) software.

TERATOGENIC AND EMBRYO-TOXIC EFFECTS OF LATEX AND LEAVES METHANOL EXTRACT OF EUPHORBIA HELIOSCOPIA L. IN MICE AND CHICKEN EMBRYOS

rohita exhibited significantly higher mean Cd LD50 values of 144.

Acute Toxicity of Water-borne and Dietary Cadmium and Cobalt for Fish

Lower and upper limits of LD50 values in parenthesis.

Comparative molluscicidal activity of aqueous and methanolic extracts of Zingiber officinale against bulinus globosus

LD50 of venom was determined as described by Meier and Theakston (1986).

Oxidative Stress and Apoptosis are Markers in Renal Toxicity Following Egyptian Cobra (Naja haje) Envenomation

analyzed by Finney computer program to determine the LD50 values [37].

Study of Antioxidant, Cytotoxic, and Enzyme Inhibition Activities of Some Symmetrical N3,N3'-Bis(disubstituted)isophthalyl-bis(thioureas) and N3,N3,N3',N3'-Tetrakis(disubstituted)isophthalyl-bis(thioureas) and Their Cu(II) and Ni(II) Complexes

Table II: LD50 of Piper nigrum fruit extracts on S.

Insecticidal Properties of Piper nigrum Fruit Extracts and Essential Oils against Spodoptera litura