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.