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  1. 1961
    “…Our analysis confirms that TTV titers peaked at 100 days post-transplant, followed by progressive normalization thereafter. …”
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    Torque Teno Virus as a Potential Biomarker for Complications and Survival After Allogeneic Hematopoietic Stem Cell Transplantation
  2. 1962
    “…Lentiviral vectors produced using the T antigen null clones exhibited titers up to 1.5 × 10(7) transducing units (TU)/mL, while the titers obtained from the parent HEK293T cell line were up to 4 × 10(7) TU/mL. …”
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    Design and Testing of Vector-Producing HEK293T Cells Bearing a Genomic Deletion of the SV40 T Antigen Coding Region
  3. 1963
    “…Although antibody response to SARS-CoV-2 can be detected early during the infection, several outstanding questions remain to be addressed regarding the magnitude and persistence of antibody titer against different viral proteins and their correlation with the strength of the immune response. …”
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    Persistence of Anti-SARS-CoV-2 Antibodies in Non-Hospitalized COVID-19 Convalescent Health Care Workers
  4. 1964
    “…Fermentation was scaled-up to fed-batch bioreactors, reaching a (−)-patchoulol titer of 40.2 mg L(–1) and productivity of 20.1 mg L(–1) d(–1). …”
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    Whole-Cell Production of Patchouli Oil Sesquiterpenes in Escherichia coli: Metabolic Engineering and Fermentation Optimization in Solid–Liquid Phase Partitioning Cultivation
  5. 1965
    “…These MDA titers remained above 1:200 during the first seven weeks of life. …”
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    Immunogenicity of E2CD154 Subunit Vaccine Candidate against Classical Swine Fever in Piglets with Different Levels of Maternally Derived Antibodies
  6. 1966
    “…BACKGROUND: Influenza infection is often measured by a fourfold antibody titer increase over an influenza season (ie seroconversion). …”
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    Using serological measures to estimate influenza incidence in the presence of secular trends in exposure and immuno‐modulation of antibody response
  7. 1967
    “…Conversely, significant discrepancies were observed for the MDA titers in unvaccinated puppies. Protective MDA titers were observed in 91.9% puppies using HI and in 40.4% by the in-clinic ELISA test, and only the latter one showed a decrease of MDA titers and percentages of protected puppies after the first weeks of age. …”
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    Discrepancy Between In-clinic and Haemagglutination-Inhibition Tests in Detecting Maternally-Derived Antibodies Against Canine Parvovirus in Puppies
  8. 1968
    “…The principle of limiting the infection to a single round increases the precision of the assay measurements. RVP log(10)EC(50) titers correlated closely with titers determined using a plaque reduction neutralization test (PRNT) (R(2)>95%). …”
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    A high throughput reporter virus particle microneutralization assay for quantitation of Zika virus neutralizing antibodies in multiple species
  9. 1969
    “…Musk tibeten significantly increased JH titer and decreased the 20-E titer in hemolymph, and musk xylene had a significant inhibitory effect on JH titer and increased 20-E titer. …”
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    Effects of fragrance compounds on growth of the silkworm Bombyx mori
  10. 1970
    “…The presence of elevated anti-phospholipid antibody titers may confer increased risk for this vision-threatening complication.…”
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    Occlusive retinal vasculitis associated with systemic sclerosis and antiphospholipid antibodies
  11. 1971
    “…However, differences in prevalences, titers, and affinities of these antibodies indicate distinct differences in the antibody evolution between healthy individuals and patients.…”
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    Nonneutralizing FVIII-specific antibody signatures in patients with hemophilia A and in healthy donors
  12. 1972
    “…Diagnosis of leptospirosis was defined as an unvaccinated dog with a positive MAT titer of ≥1:800 or a vaccinated dog or dog with an unknown vaccination status with a positive MAT titer of ≥1:1,600. …”
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    The Evaluation of the Diagnostic Value of a PCR Assay When Compared to a Serologic Micro-Agglutination Test for Canine Leptospirosis
  13. 1973
    “…RESULTS: Among 56 seropositive participants at enrollment, children aged 0–4 years had more than 10-fold higher RBDAb titers than adults (416 vs. 31, P < 0.0001) and the highest RBDAb titers in 11 of 12 households with seropositive children and adults. …”
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    Binding and neutralizing antibody responses to SARS-CoV-2 in very young children exceed those in adults
  14. 1974
    “…MB and Zn-PcChol(8+) at concentrations of 1–5 μM, in combination with red light from LED sources in the low doses of 1.5–4.0 J/cm(2), led to a decrease in BCoV titers by at least four orders of magnitude from the initial titer 5 Log(10) TCID50/mL. …”
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    Infectivity and Morphology of Bovine Coronavirus Inactivated In Vitro by Cationic Photosensitizers
  15. 1975
    “…The cut-off of rSBA titer ≥ 8 is considered the correlate of protection. …”
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    Evaluation of Meningococcal Serogroup C Bactericidal Antibodies after Primary Vaccination: A Multicentre Study, Italy
  16. 1976
    “…NAb titer was absent against the Omicron variant and the cultured virus of the 20A variant with eight aa deletions in non-vaccinated patients. …”
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    A Short Series of Case Reports of COVID-19 in Immunocompromised Patients
  17. 1977
    “…Neutralizing antibodies were determined by microneutralization (MN) assays, and the geometric mean 50% MN (MN(50)) titers were calculated. For the PIV groups, after one dose MN(50) titers were higher in the novel adjuvant groups compared to the alum control, while MN(50) titers were comparable between the adjuvant groups after the second dose. …”
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    Enhanced Immunogenicity of Inactivated Dengue Vaccines by Novel Polysaccharide-Based Adjuvants in Mice
  18. 1978
    “…Significantly higher NtAb titers were found against B.1 and Alpha in both COVID-19+ and vaccinees, while lower NtAb titers were detected against Delta, Gamma, and Omicron variants. …”
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    Neutralizing Antibodies Response against SARS-CoV-2 Variants of Concern Elicited by Prior Infection or mRNA BNT162b2 Vaccination
  19. 1979
    “…The titer of apramycin increased from 2227 ± 320 mg/L to 2331 ± 210 mg/L, while the titer of product impurity demethyl-apramycin decreased from 196 ± 36 mg/L to 51 ± 9 mg/L. …”
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    Characterization and utilization of methyltransferase for apramycin production in Streptoalloteichus tenebrarius
  20. 1980
    “…The RT-qPCR demonstrated to be an accurate and rapid method for titer determination of replication deficient VRPs.…”
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    Packaging, Purification, and Titration of Replication-Deficient Semliki Forest Virus-Derived Particles as a Self-Amplifying mRNA Vaccine Vector
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