Journal: medRxiv
Article Title: Mass-Standardised IgG Response to Fourteen SARS-CoV-2 Spike Protein variants and Antibody Subclass analysis for IgG subclasses and IgE for a Long COVID Patient Cohort
doi: 10.64898/2026.01.26.26344863
Figure Lengend Snippet: The variant profiles showing the long COVID classification triggers: (A) IgG1 below threshold, T; and (B) IgG3 (C) IgG4 (D) IgE above threshold, T, derived from the percentile (T) in the mean-normalised variant concentration distributions in the Control Cohort.
Article Snippet: IgG1 spike reference materials from Sinobiological (40590-D001) were used to calibrate the surface density of spike protein for each variant, binding to the conserved S2 region.
Techniques: Variant Assay, Derivative Assay, Concentration Assay, Control