(a.) One more that eleven; two and ten; twice six; a dozen.
(n.) The number next following eleven; the sum of ten and two, or of twice six; twelve units or objects; a dozen.
(n.) A symbol representing twelve units, as 12, or xii.
Example Sentences:
(1) Twelve families with Wiskott-Aldrich syndrome (WAS) were studied by linkage analysis using 10 polymorphic marker loci from the X-chromosome pericentromeric region.
(2) Twelve patients with South American mococutaneous leishmaniasis who attended the Hospital Amazonico in Peru between February and September 1974 were treated with amphotericin B.
(3) Even so, amputation of fifteen extremities and four other major excisions were required in twelve patients.
(4) One hundred and twelve dogs, including twenty C3-deficient dogs, were studied over a period of 6 years.
(5) Buserelin and Flutamide were administered three times daily, intranasally and orally respectively, at a dose of 1.2 mg and 750 mg for twelve months.
(6) The fine needle aspiration cytology features of twelve peripherally located bronchioloalveolar cell carcinomas of the lung diagnosed by fine needle aspiration biopsy are described.
(7) For a better understanding of the cytochrome P-450 mediated reactions, we studied the metabolism of midazolam in microsomal fractions prepared from twelve human livers.
(8) Twelve strains of the Crimean hemorrhagic fever (CHF)-Congo group of viruses the Bunyaviridae family were investigated with respect to sensitivity to lipid solvents and temperature, pathogenicity for animals, interactions with cell cultures and antigenic relationships.
(9) Twelve patients had normal hemodynamic data (group 1), nine had abnormal hemodynamic data only during exercise (group 2), and 11 had abnormal hemodynamic data at rest and during exercise (group 3).
(10) Twelve monkeys, Macaca fascicularis and Macaca mulatta, were investigated to study their renal microvasculature.
(11) Twelve mutations were searched for using classical techniques of molecular biology in a total of 126 patients.
(12) This paper describes a teaching process in which two 4th year medical students learn a family approach to problem solving during a short clerkship of twelve hours spread over four weekly sessions.
(13) Twelve healthy rabbits, in three similar subgroups, were exposed to pathogenic Escherichia coli and their immune response was studied under different experimental conditions.
(14) Twelve patients (group 1), all with coronary artery disease, produced myocardial lactate during pacing.
(15) Twelve weeks after withdrawal heart rate and blood pressure responses to mental stress were normalized.
(16) Twelve healthy volunteers were given single oral doses of bisoprolol 5 mg, 10 mg and 20 mg and atenolol 50 mg and 100 mg in a randomised, placebo-controlled study.
(17) Twelve young male smokers each participated in four conditions on 4 separate days: stress + nicotine, stress + placebo (stress alone), rest + nicotine (nicotine alone), and rest + placebo.
(18) Twelve subjects each received multiple doses of 150, 200, 250, and 300 mg of moricizine every 8 hours during 7 days of treatment.
(19) Twelve donor sites in 10 patients were observed in detail to assess the usefulness of this material.
(20) The efficacy of three different therapeutic regimes was studied in one group by the application of the drug to the entire skin for either five minutes, fifteen minutes, or twelve hours for eighteen days.