Figure 3 Comparison of immunoglobulins in serum and saliva.
A-C: Each point presented a measured COI value of immunoglobulin in
serum or saliva. Two points with line were paired samples collected from
same patient. Red points presented positive result. Red lines meant the
level of immunoglobulin in saliva was higher than the corresponding
serum. D: The list of antibody levels 15 saliva samples.
+ means positive and – means negative.