Based on the results of the previous lectin microarrays, three different lectins (p < 0.05) (PTL-II, UEA-I and DBA) were selected for serum glycosylation changes in lung cancer, and further verified by the serum microarray to confirm if there were differences in the expression level of the target glycan structure in the individual serum samples. The gene discussed is RPS19; the disease is lung carcinoma.