Spleen / Humans / Female / Male / Lectins / Bone marrow / T lymphocytes / Aged / Middle Aged / B Lymphocytes / Tuberculin Test / Blood Proteins / immunoglobulin G / Agammaglobulinemia / Immunoglobulin A / Bone marrow / T lymphocytes / Aged / Middle Aged / B Lymphocytes / Tuberculin Test / Blood Proteins / immunoglobulin G / Agammaglobulinemia / Immunoglobulin A