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  1. 4181
    “…The revealed patterns of sexual risk behaviours, for example, close to 50% of men having multiple partners and 78% of the population have never used a condom; it is likely that HIV infection will rapidly escalate. …”
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    High potential of escalating HIV transmission in a low prevalence setting in rural Tanzania
  2. 4182
    por Seeman, Philip
    Publicado 1967
    “…Glutaraldehyde does not per se induce or create such membrane defects since cells which had been fixed by glutaraldehyde before the 10-sec time point or after the 180-sec time point were never permeable to added ferritin, and the cell membranes never contained any defects. …”
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    TRANSIENT HOLES IN THE ERYTHROCYTE MEMBRANE DURING HYPOTONIC HEMOLYSIS AND STABLE HOLES IN THE MEMBRANE AFTER LYSIS BY SAPONIN AND LYSOLECITHIN
  3. 4183
    por Zinsser, Hans, Dwyer, J. G.
    Publicado 1914
    “…The degree to which such resistance or tolerance is developed is never very high, in no case in our experiments exceeding the ability to withstand one and one half to twice the fatal dose of the poisons. …”
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    ON THE IMMUNIZATION OF ANIMALS WITH BACTERIAL PROTEOTOXINS (ANAPHYLATOXINS)
  4. 4184
    por Ionesco-Mihaiesti, C.
    Publicado 1924
    “…The passage of the lytic principle through collodion membranes was never observed. 5. No appreciable diminution in the activity of the filtrates was observed after exposure to cholesterol or lecithin. …”
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    STUDIES ON THE TWORT-D'HERELLE PHENOMENON
  5. 4185
    por Uhlenhuth, Eduard
    Publicado 1918
    “…Larvæ of anuran amphibians, which develop their parathyroids soon after hatching, never show tetanic convulsions if they are fed on thymus, but in certain species of salamanders, whose parathyroids develop only during metamorphosis, the larvæ invariably have tetanic convulsions upon thymus feeding, while the metamorphosed animals never show tetany. …”
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    THE ANTAGONISM BETWEEN THYROID AND PARATHYROID GLANDS
  6. 4186
    “…Receipt of medications for ADHD was a significant correlate of past-year NMU, though most nonmedical users never had a prescription. Among persons who had never been prescribed medication to treat ADHD, friends or family members were the most common source. …”
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    The nonmedical use of prescription ADHD medications: results from a national Internet panel
  7. 4187
    “…How the ability of TZDs to modulate the asthmatic response compares to that of glucocorticoids remains unclear, however, because these two nuclear receptor agonists have never been studied concurrently. Additionally, effects of PPAR-γ agonists have never been examined in a model involving an allergen commonly associated with human asthma. …”
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    Pioglitazone is as effective as dexamethasone in a cockroach allergen-induced murine model of asthma
  8. 4188
    “…RESULTS: We found no significant differences in the rates of S allele carriers in ever smokers and never smokers, and no relationship was observed between any quantitative measures of smoking and the polymorphism. …”
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    Lack of association between serotonin transporter gene polymorphism 5-HTTLPR and smoking among Polish population: a case-control study
  9. 4189
    “…The IL-5Rα(+)CD34(+)CD38(+)IL-3Rα(+)CD45RA(−) hEoPs gave rise exclusively to pure eosinophil colonies but never differentiated into basophils or neutrophils. …”
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    Identification of the human eosinophil lineage-committed progenitor: revision of phenotypic definition of the human common myeloid progenitor
  10. 4190
    “…However, the role of DNA methylation in the control of HIV-1 latency has never been unambiguously demonstrated, in contrast to the apparent importance of transcriptional interference and chromatin structure, and has never been studied in HIV-1-infected patients. …”
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    CpG Methylation Controls Reactivation of HIV from Latency
  11. 4191
    “…Of the physicians, 20% (n=24) had never intubated a patient, 78% (n=92) had not introduced a central venous catheter, and 76% (n=90) had never introduced an intra-arterial catheter. …”
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    GAP between knowledge and skills for the implementation of the ACCM/PALS septic shock guidelines in India: Is the bridge too far?
  12. 4192
    “…Among APOE ε4 non-carriers, current smokers had lower scores on memory (difference in T-score = -2.49, 95%CI: -3.37, -1.60), reasoning (-2.88, 95%CI: -3.74, -2.01), phonemic (-2.66, 95%CI: -3.56, -1.76) and semantic (-2.38, 95%CI: -3.28, -1.47) fluency compared to never smokers. In APOE ε4 carriers, difference between current and never smokers was seen only for reasoning (-1.92, 95%CI: -3.31, -0.51). …”
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    Effect of Apolipoprotein E ε4 on the association between health behaviors and cognitive function in late midlife
  13. 4193
    “…Various revisions were implemented to reduce hypoglycemia events, but levels never returned to those from pre-implementation. …”
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    Implementing glucose control in intensive care: a multicenter trial using statistical process control
  14. 4194
    “…BACKGROUND: Time-to-pregnancy (TTP) has never been studied in an African setting and there are no data on the rates of adverse pregnancy outcomes in South Africa. …”
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    Time-to-pregnancy and pregnancy outcomes in a South African population
  15. 4195
    “…This case highlights how even the most innocent GISTs can never be described as truly benign.…”
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    GIST suture-line recurrence at a gastrojejunal anastomosis 8 years after gastrectomy: can GIST ever be described as truly benign? A case report
  16. 4196
    “…Objective: To examine the influence of cannabis use on long-term outcome in patients with a first psychotic episode, comparing patients who have never used cannabis with (a) those who used cannabis before the first episode but stopped using it during follow-up and (b) those who used cannabis both before the first episode and during follow-up. …”
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    Cannabis and First-Episode Psychosis: Different Long-term Outcomes Depending on Continued or Discontinued Use
  17. 4197
    “…METHODS: Patients who had never tested for HIV or tested negative over one year prior to recruitment were enrolled between May 2008 and March 2010. …”
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    Online Artículo Texto
    Missed Opportunities for HIV Testing and Late-Stage Diagnosis among HIV-Infected Patients in Uganda
  18. 4198
    “…Similar patterns (although attenuated and non-significant) were observed among never smokers. More marked dose–response relationships were observed between passive smoking exposure and respiratory symptoms, but the most marked effects were on the development of clinically significant COPD (airflow obstruction plus symptoms), where the risk among never smokers was doubled (OR 1.98 (95% CI 1.03 to 3.79)) if exposure exceeded 20 h/week. …”
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    Passive smoking and chronic obstructive pulmonary disease: cross-sectional analysis of data from the Health Survey for England
  19. 4199
    “…Three main patterns of shedding were identified: i- bacteria were shed intermittently (46% of individuals), ii- bacteria shedding fell with the progression of the infection (31%) and iii- individuals never shed bacteria despite being infected (23%). …”
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    Immune regulation of a chronic bacteria infection and consequences for pathogen transmission
  20. 4200
    “…Cigarette smoking and high cumulative incense exposure at home appeared to have a synergistic effect on lung cancer (compared with never-smokers who never used incense, the OR for lung cancer for smokers who used incense ≥ 60 day-years = 5.00; 95% confidence interval: 3.34, 7.51). …”
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    A Case–Referent Study of Lung Cancer and Incense Smoke, Smoking, and Residential Radon in Chinese Men
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