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  1. 3681
    “…METHODS: Based on the fact that antibodies exhibit neutralizing activity by blocking the binding of the S protein receptor-binding domain (S-RBD) to ACE2, we developed a rapid neutralizing antibody test, ACE2-Block-ELISA. …”
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    Development of a rapid neutralizing antibody test for SARS-CoV-2 and its application for neutralizing antibody screening and vaccinated serum testing
  2. 3682
    “…The difference between the study arms in anti-spike RBD antibody level will be estimated using mixed effects model, allowing for repeated measures clustered within participants. …”
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    Effects of temporarily suspending low-dose methotrexate treatment for 2 weeks after SARS-CoV-2 vaccine booster on vaccine response in immunosuppressed adults with inflammatory conditions: protocol for a multicentre randomised controlled trial and nested mechanistic substudy (Vaccine Response On/Off Methotrexate (VROOM) study)
  3. 3683
    “…COVID‐HIG shows high‐affinity binding to severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) spike (S) protein, the receptor‐binding domain (RBD), the N‐terminal domain of the S protein, and the nucleocapsid protein; and blocks RBD binding to human angiotensin‐converting enzyme 2 (hACE2). …”
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    Potent Anti‐SARS‐CoV‐2 Efficacy of COVID‐19 Hyperimmune Globulin from Vaccine‐Immunized Plasma
  4. 3684
    “…Previously, we showed that a protein subunit vaccine that was developed based on the fusion of the SARS-CoV-2 receptor-binding domain (RBD) to the Fc portion of human IgG1 (RBD-Fc), produced in Nicotiana benthamiana, and adjuvanted with alum, namely, Baiya SARS-CoV-2 Vax 1, induced potent immunological responses in both mice and cynomolgus monkeys. …”
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    Preclinical evaluation of a plant-derived SARS-CoV-2 subunit vaccine: Protective efficacy, immunogenicity, safety, and toxicity
  5. 3685
    “…RESULTS: The baseline (before the third dose of BNT162b2) anti-receptor binding domain (RBD) IgG level was 569[377–943] AU/mL 245[240–250] days after the second dose. …”
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    Immunological responses following the third dose of the BNT162b2 SARS-CoV-2 vaccine among Japanese healthcare workers
  6. 3686
    “…By utilizing cross-blocking data, we clustered SARS-CoV-2 receptor binding domain (RBD)-specific monoclonal antibodies (mAbs) into 6 clusters. …”
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    Potential of antibody pair targeting conserved antigenic sites in diagnosis of SARS-CoV-2 variants infection
  7. 3687
    “…We conducted a prospective study in which we evaluated concentrations of anti-SARS-CoV-2 Spike IgA and RBD IgG/M/A antibodies in maternal serum and breast milk over a duration of up to 6 months after delivery. …”
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    Anti-SARS-CoV-2 antibodies in breast milk during lactation after infection or vaccination: A cohort study
  8. 3688
    “…By combining pseudotype neutralization with specific receptor-binding domain (RBD) enzyme-linked immunosorbent assays, we showed that changes to position 484 in the spike RBD were mainly responsible for SARS-CoV-2 neutralizing antibody escape. …”
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    Neutralizing antibody activity against 21 SARS-CoV-2 variants in older adults vaccinated with BNT162b2
  9. 3689
    “…The inhibitory concentration 50 (IC(50)) of ZnO /CGA-NPs against RBD, angiotensin-converting enzyme 2 (ACE2) and PL(pro) were 1647.7, 323.3 µg/mL and 38.7 µg/mL, respectively. …”
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    ZnO-chlorogenic acid nanostructured complex inhibits Covid-19 pathogenesis and increases hydroxychloroquine efficacy
  10. 3690
    “…We observed a strong relationship between neutralizing antibodies and RBD-binding antibodies postvaccination across all groups, whereas no relationship was observed between NP-binding and neutralizing antibodies. …”
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    Impact of Prior Infection on SARS-CoV-2 Antibody Responses in Vaccinated Long-Term Care Facility Staff
  11. 3691
    “…In the present work, we describe the production of two SARS-CoV-2 human IgG1 monoclonal antibodies recognizing the spike protein receptor-binding domain (RBD) and endowed with neutralizing activity (nAbs) in plants. …”
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    Production of two SARS-CoV-2 neutralizing antibodies with different potencies in Nicotiana benthamiana
  12. 3692
    “…Moreover, immunocompromised children showed lower odds for S- and RBD-specific IgG in both serum and saliva compared to healthy children (aOR 0.23 – 0.25, P ≤ 0.050). …”
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    Differences in systemic and mucosal SARS-CoV-2 antibody prevalence in a prospective cohort of Dutch children
  13. 3693
    “…BAL IgG and IgA recognized the four main RBD variants. BAL neutralizing titers were higher early in COVID-19 when virus replicates in the lung than later in infection after viral clearance. …”
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    Persistent but dysfunctional mucosal SARS-CoV-2-specific IgA and low lung IL-1β associate with COVID-19 fatal outcome: A cross-sectional analysis
  14. 3694
    “…Sera were tested before the first, after the second, and before and after the third dose for anti-SARS-CoV-2 receptor binding domain (RBD) spike protein IgG (anti-RBD). Thirty-nine patients with CLL were included in the study. …”
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    Immunogenicity of a third dose of the BNT162b2 COVID-19 vaccine in patients with CLL: effects on treatment selection
  15. 3695
    “…The sera were tested for anti-RBD antibody (ARAb) titre and neutralising antibody (NAb). …”
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    Antibody Response to ChAdOx1 nCoV-19 (AZD1222) Vaccine in Kidney Transplant Recipients
  16. 3696
    “…Most patients with RA scored positive for anti-RBD, neutralizing antibody and T-cell responses, although the magnitude was lower than HCWs. …”
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    Booster dose of SARS-CoV-2 messenger RNA vaccines strengthens the specific immune response of patients with rheumatoid arthritis: A prospective multicenter longitudinal study
  17. 3697
    “…This study explored the effects of dietary crude palm oil (CPO), red palm oil (RPO), refined palm oil (RBD), palm kernel oil (PKO) and soybean oil (SBO) in laying hens. …”
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    Influence of Dietary Palm Oils, Palm Kernel Oil and Soybean Oil in Laying Hens on Production Performance, Egg Quality, Serum Biochemicals and Hepatic Expression of Beta-Carotene, Retinol and Alpha-Tocopherol Genes
  18. 3698
    “…Patients with AIRDs previously infected with COVID-19, who have received at least one dose of AZD1222/ChAdOx1 (n = 200) were included and stratified based on vaccine doses (V), and infection (I) into I + V, I + V + V, V + I, V + V + I. Anti-RBD (receptor binding domain) antibodies were compared across the four groups. …”
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    Effects of the second dose of COVID-19 vaccines in patients with autoimmune rheumatic diseases with hybrid immunity
  19. 3699
    “…Here, we report the isolation and analysis of two anti-RBD neutralizing antibodies BA7208 and BA7125 from mice engineered to produce human antibodies. …”
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    Biparatopic antibody BA7208/7125 effectively neutralizes SARS-CoV-2 variants including Omicron BA.1-BA.5
  20. 3700
    “…The prevalence of anti-S-RBD and/or anti-N IgG antibodies was 32.9% [28.7–37.4]. …”
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    Incidence and risk factors of SARS-CoV-2 infection among workers in a public health laboratory in Tunisia
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