Labels:bulletin board | dialog box | earth | road | sidewalk | sky | web site | window OCR: A Comparison of T Cells and Cells Characteristics T Cells B Cells Origin of Red bone marrow Red bone marrow undifferentiated cell Site of differentiation Thymus Probably the bone marrow Primary locations Lymphatic tissues 70- 80% Lymphatic tissues 2030% of the of the circulating lymphocytes circulating lymphocytes Primary functions Provides cell- l-mediated Provides antibody-mediated immunity immunity in which cells interact ire which B cells interact indirectly with directly with antigen- bearing agents antigen- bearing agents produce antibodies Primar
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