Figure 3
From: An outbreak caused by GII.17 norovirus with a wide spectrum of HBGA-associated susceptibility

Saliva-based HBGA binding assay of P particle of GII.17 strain DG42.
(A) 8 boiled well-characterized saliva samples were coated onto 96-well plates prior to the addition P particle. The P particle was tested in a series of 3-fold dilutions (15 μg/ml, 5 μg/ml and 1.7 μg/ml) by enzyme-linked immunosorbent assay (ELISA). (B) The binding activities of 90 saliva samples (all 69 symptomatic and 21 asymptomatic nonsecretor individuals) from the outbreak were sorted by blood types. The P particle was diluted at 5 μg/ml. “A,” “B,” “O,” and “N” represent the type A, B, O and nonsecretor saliva, respectively.