Figure 4.

Salivary anti‐α‐Gal antibody response in COVID‐19 asymptomatic cases and healthy controls. A, The anti‐α‐Gal IgA and IgG antibody titers were determined by ELISA and compared in asymptomatic cases between serum and saliva samples by Student′s t‐test (p < .05; n = 10). B, The anti‐α‐Gal IgA antibody titers in saliva were determined by ELISA and compared between asymptomatic COVID‐19 cases and healthy individuals by Student′s t‐test (p < .05; n = 10). COVID‐19, coronavirus disease 2019; ELISA, enzyme‐linked immunosorbent assay; ICU, intensive care unit; IgA, immunoglobulin A; α‐Gal, Galα1‐3Galβ1‐(3)4GlcNAc‐R