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LLISA (lectin-linked immunosorbent assay) for the detection of glycan alterations in a target glycoprotein by lectin microarray. (A) diagram of the lectin microarray for the detection of glycan in the target glycoprotein, (B) the specific binding patterns of target protein PSA to lectins on lectin microarrays, and (C) the detection sensitivity of the specific lectin-PSA interaction. SNA: Sambucus nigra agglutinin; CALSEPA: Calystege sepium agglutinin; PSA: prostatic specific antigen.
