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  1. 2001
    “…RESULTS: The youngest age group had significantly (p<0.05) higher geometric mean titers for H3N2v with 165 (95% confidence interval [CI]: 105–225) compared with the two older groups, aged 32–33 and 47–48 years, who had geometric mean titers of 68 (95% CI: 55–82) and 46 (95% CI: 24–65), respectively. …”
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    Seroprotective Antibodies to 2011 Variant Influenza A(H3N2v) and Seasonal Influenza A(H3N2) among Three Age Groups of US Department of Defense Service Members
  2. 2002
    “…In addition to resolution of clinical manifestations, a reduction in nontreponemal antibody titers after treatment is regarded as “proof of cure.” …”
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    A systematic review of syphilis serological treatment outcomes in HIV-infected and HIV-uninfected persons: rethinking the significance of serological non-responsiveness and the serofast state after therapy
  3. 2003
    “…RESULTS: The Pre-F/F VLP induced neutralizing titers that were well above minimum levels previously proposed to be required for a successful vaccine and titers significantly higher than those stimulated by RSV infection. …”
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    Cotton rat immune responses to virus-like particles containing the pre-fusion form of respiratory syncytial virus fusion protein
  4. 2004
    “…Slower virucidal kinetics was observed with other enveloped viruses, where 240 min exposure to coated slides lead to 97 % (dengue), 100 % (herpes simplex) and 77 % (influenza) reduction in virus titers. Interestingly, only marginal reduction in viral titer after 240 min of exposure was noticed for non-enveloped coxsackie B3 virus. …”
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    Protective hybrid coating containing silver, copper and zinc cations effective against human immunodeficiency virus and other enveloped viruses
  5. 2005
    “…Responders were defined as ≥25% fall in TPO-Ab titers. Individuals with at least 3-month follow-up were analyzed. …”
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    Vitamin D supplementation reduces thyroid peroxidase antibody levels in patients with autoimmune thyroid disease: An open-labeled randomized controlled trial
  6. 2006
    “…In HIV-infected participants, each 10% increase in CD4/CD8 ratio predicted a mean 21% higher post-baseline YFV Nab titer (p = 0.024). Similarly, each 10% increase in KT ratio predicted a mean 21% lower post-baseline YFV Nab titer (p = 0.009). …”
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    CD4/CD8 Ratio and KT Ratio Predict Yellow Fever Vaccine Immunogenicity in HIV-Infected Patients
  7. 2007
    “…Due to product inhibition, the itaconate titer in NaOH-titrated bioreactor cultivations was lower (24 g L(−1)). …”
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    Efficient itaconic acid production from glycerol with Ustilago vetiveriae TZ1
  8. 2008
    “…RESULTS: At baseline, there was no difference in antibody titer among the experimental groups. After the first and booster vaccinations, the three vaccinated groups had significantly higher antibody titer (P < 0.001) than the unvaccinated control group. …”
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    Evaluation of spray and oral delivery of Newcastle disease I2 vaccine in chicken reared by smallholder farmers in central Ethiopia
  9. 2009
    “…The average ratio of neutralizing antibody titers based on manual counted plaques to Viridot counted plaques was 1.05 (95% CI: 0.98–1.14), similar to the average ratio of antibody titers based on manual plaque counts by the two analysts (1.06 [95% CI: 0.84–1.34]). …”
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    Viridot: An automated virus plaque (immunofocus) counter for the measurement of serological neutralizing responses with application to dengue virus
  10. 2010
    “…Patients with CrAg titers ≥1:160 had 2.6-fold higher 6-month mortality than patients with titers <1:160. …”
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    Reflexive Laboratory-Based Cryptococcal Antigen Screening and Preemptive Fluconazole Therapy for Cryptococcal Antigenemia in HIV-Infected Individuals With CD4 <100 Cells/µL: A Stepped-Wedge, Cluster-Randomized Trial
  11. 2011
    “…Finally, expression levels of human beta defensins 1–3 were quantified in cultures infected by ZIKV and those colonized by VMBs that impacted ZIKV titers. Human beta defensins 1–3 produced by the VEC showed no association with ZIKV titers. …”
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    Cultivated Human Vaginal Microbiome Communities Impact Zika and Herpes Simplex Virus Replication in ex vivo Vaginal Mucosal Cultures
  12. 2012
    “…Seven years after the first immunization two goats and two sheep as well as two naïve goats and two sheep were boostered and TBEV antibody titers followed. RESULTS: Only one sample in each of the three states was TBEV-antibody positive (VNT), albeit with low titers. …”
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    Tick-borne encephalitis virus (TBEV) antibodies in animal sera – occurrence in goat flocks in Germany, longevity and ability to recall immunological information after more than six years
  13. 2013
    “…The isotype-specific antibody titers to BCV in serum (at selected intervals between 0 and 120 days of age) and the post-suckling (24 to 48 h after birth) total immunoglobulin levels were examined by ELISA and zinc sulfate turbidity tests, respectively. …”
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    A longitudinal study of bovine coronavirus enteric and respiratory infections in dairy calves in two herds in Ohio()
  14. 2014
    por Hierholzer, John C.
    Publicado 1976
    “…Coronavirus 229E was grown to high titers in diploid fibroblast cells under medium containing twice the normal concentrations of amino acids and vitamins. …”
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    Purification and biophysical properties of human coronavirus 229E
  15. 2015
    “…However, efforts to engineer these photoautotrophs have resulted in low product titers. This may be ascribed to the bottlenecks in metabolic pathways, which need to be identified for rational engineering. …”
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    Metabolic engineering of a fast-growing cyanobacterium Synechococcus elongatus PCC 11801 for photoautotrophic production of succinic acid
  16. 2016
    “…The titer of CRM A production was then improved by two strain breeding methods via UV mutagenesis and cofactor engineering-directed increase of intracellular riboflavin, which finally generated the optimal mutant strain XC-11GUR with a CRM A production titer of 113.91 ± 7.58 mg/L. …”
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    Activation and enhancement of caerulomycin A biosynthesis in marine-derived Actinoalloteichus sp. AHMU CJ021 by combinatorial genome mining strategies
  17. 2017
    “…One patient had a rebound in titers and subsequently was transplanted from a blood group compatible living donor. …”
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    The First North American Experience Using Glycosorb Immunoadsorption Columns for Blood Group–Incompatible Kidney Transplantation
  18. 2018
    “…The optimal MOI for SfXv124t/3 was 0,01 (tested range 0,01–100) with maximal phage titer, reported at the 24(th) hour of incubation. …”
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    Broad host range bacteriophages found in rhizosphere soil of a healthy tomato plant in Bulgaria
  19. 2019
    “…This was also true for the elderly population, albeit with lower antibody titers. Immunosuppressive use, particularly rituximab significantly reduced antibody titers. …”
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    Antibody response to inactivated COVID-19 vaccine (CoronaVac) in immune-mediated diseases: a controlled study among hospital workers and elderly
  20. 2020
    “…BACKGROUND: We compared influenza antibody titers among vaccinated and unvaccinated pregnant and non-pregnant women. …”
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    Antibody responses induced by trivalent inactivated influenza vaccine among pregnant and non-pregnant women in Thailand: A matched cohort study
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