Direct Assignment, Pursuant To Art. 50 Paragraph 1 Letter. B) Of The Legislative Decree. 36/2023 And Subsequent Amendments, For The Purchase Of A Glycoproteomics Service For The Characterization Of The Composition And Variation Of Glycosylation In Igg Immunoglobulins In Kidney Transplant Patients, Required By The Nephrology And Kidney Transplant Unit.