leukocyte activation
 |__lymphocyte activation___________
leukocyte proliferation             |
 |__mononuclear cell proliferation__|
                                    lymphocyte proliferation
                                     |__B cell proliferation
                                     |   |__B cell homeostatic proliferation
                                     |   |__B cell proliferation involved in immune response
                                     |   |__B-1 B cell proliferation
                                     |   |__regulation of B cell proliferation(+)
                                     |__natural killer cell proliferation
                                     |   |__regulation of natural killer cell proliferation(+)
                                     |__regulation of lymphocyte proliferation
                                     |   |__negative regulation of lymphocyte proliferation(+)
                                     |   |__positive regulation of lymphocyte proliferation(+)
                                     |   |__regulation of B cell proliferation(+)
                                     |   |__regulation of natural killer cell proliferation(+)
                                     |   |__regulation of T cell proliferation(+)
                                     |__T cell proliferation
                                         |__activated T cell proliferation(+)
                                         |__alpha-beta T cell proliferation(+)
                                         |__gamma-delta T cell proliferation(+)
                                         |__immature T cell proliferation(+)
                                         |__memory T cell proliferation
                                         |__regulation of T cell proliferation(+)
                                         |__T cell homeostatic proliferation(+)
                                         |__T cell proliferation involved in immune response