| 1. | Abetalipoproteinemia (1 recruiting study) |
| 2. | Agammaglobulinemia (1 recruiting study) |
| 3. | Agranulocytosis (16 recruiting studies) |
| 4. | Anemia (121 recruiting studies) |
| 5. | Anemia, Aplastic (18 recruiting studies) |
| 6. | Anemia, Diamond-Blackfan (8 recruiting studies) |
| 7. | Anemia, Hemolytic (32 recruiting studies) |
| 8. | Anemia, Hemolytic, Autoimmune (1 recruiting study) |
| 9. | Anemia, Hemolytic, Congenital (26 recruiting studies) |
| 10. | Anemia, Hypoplastic, Congenital (8 recruiting studies) |
| 11. | Anemia, Refractory (48 recruiting studies) |
| 12. | Anemia, Refractory, with Excess of Blasts (45 recruiting studies) |
| 13. | Anemia, Sickle Cell (23 recruiting studies) |
| 14. | Autoimmune Lymphoproliferative Syndrome (3 recruiting studies) |
| 15. | beta-Thalassemia (6 recruiting studies) |
| 16. | Blood Coagulation Disorders (77 recruiting studies) |
| 17. | Blood Coagulation Disorders, Inherited (5 recruiting studies) |
| 18. | Blood Platelet Disorders (13 recruiting studies) |
| 19. | Blood Protein Disorders (60 recruiting studies) |
| 20. | Bone Marrow Diseases (150 recruiting studies) |
| 21. | Burkitt Lymphoma (88 recruiting studies) |
| 22. | Chediak-Higashi Syndrome (3 recruiting studies) |
| 23. | Chronic Neutropenia (2 recruiting studies) |
| 24. | Coagulation Protein Disorders (4 recruiting studies) |
| 25. | Congenital Aplastic Anemia (8 recruiting studies) |
| 26. | Cryoglobulinemia (1 recruiting study) |
| 27. | Cushing Syndrome (9 recruiting studies) |
| 28. | Eosinophilia (6 recruiting studies) |
| 29. | Essential Thrombocytopenia (1 recruiting study) |
| 30. | Essential Thrombocytosis (14 recruiting studies) |
| 31. | Evan's Syndrome (1 recruiting study) |
| 32. | Fanconi Anemia (6 recruiting studies) |
| 33. | Favism (1 recruiting study) |
| 34. | Gaucher Disease (7 recruiting studies) |
| 35. | Glucosephosphate Dehydrogenase Deficiency (1 recruiting study) |
| 36. | Granuloma (12 recruiting studies) |
| 37. | Granulomatous Disease, Chronic (6 recruiting studies) |
| 38. | Hematologic Diseases (320 recruiting studies) |
| 39. | Hematologic Neoplasms (31 recruiting studies) |
| 40. | Hemic and Lymphatic Diseases (622 recruiting studies) |
| 41. | Hemoglobin SC Disease (3 recruiting studies) |
| 42. | Hemoglobinopathies (24 recruiting studies) |
| 43. | Hemoglobinuria (4 recruiting studies) |
| 44. | Hemoglobinuria, Paroxysmal (2 recruiting studies) |
| 45. | Hemophilia A (1 recruiting study) |
| 46. | Hemophilia B (3 recruiting studies) |
| 47. | Hemorrhagic Disorders (73 recruiting studies) |
| 48. | Histiocytic Disorders, Malignant (28 recruiting studies) |
| 49. | Histiocytosis (31 recruiting studies) |
| 50. | Histiocytosis, Langerhans-Cell (3 recruiting studies) |
| 51. | Hodgkin Disease (98 recruiting studies) |
| 52. | Hypereosinophilic Syndrome (29 recruiting studies) |
| 53. | Immunoblastic Lymphadenopathy (27 recruiting studies) |
| 54. | Infectious Mononucleosis (1 recruiting study) |
| 55. | Job's Syndrome (6 recruiting studies) |
| 56. | Leukemia, Erythroblastic, Acute (26 recruiting studies) |
| 57. | Leukemia, Hairy Cell (16 recruiting studies) |
| 58. | Leukemia, Lymphocytic (184 recruiting studies) |
| 59. | Leukemia, Monocytic, Acute (25 recruiting studies) |
| 60. | Leukemia, Myelocytic, Acute (150 recruiting studies) |
| 61. | Leukemia, Myeloid (207 recruiting studies) |
| 62. | Leukemia, Nonlymphocytic, Acute (24 recruiting studies) |
| 63. | Leukocyte Disorders (34 recruiting studies) |
| 64. | Leukopenia (20 recruiting studies) |
| 65. | Lymphangiomyoma (1 recruiting study) |
| 66. | Lymphangiomyomatosis (2 recruiting studies) |
| 67. | Lymphatic Diseases (622 recruiting studies) |
| 68. | Lymphedema (7 recruiting studies) |
| 69. | Lymphoma (393 recruiting studies) |
| 70. | Lymphoma, AIDS-Related (8 recruiting studies) |
| 71. | Lymphoma, B-Cell (113 recruiting studies) |
| 72. | Lymphoma, Diffuse (54 recruiting studies) |
| 73. | Lymphoma, Follicular (129 recruiting studies) |
| 74. | Lymphoma, High-Grade (24 recruiting studies) |
| 75. | Lymphoma, Intermediate-Grade (31 recruiting studies) |
| 76. | Lymphoma, Large-Cell (148 recruiting studies) |
| 77. | Lymphoma, Large-Cell, Diffuse (125 recruiting studies) |
| 78. | Lymphoma, Large-Cell, Follicular (110 recruiting studies) |
| 79. | Lymphoma, Large-Cell, Immunoblastic (89 recruiting studies) |
| 80. | Lymphoma, Large-Cell, Ki-1 (42 recruiting studies) |
| 81. | Lymphoma, Low-Grade (16 recruiting studies) |
| 82. | Lymphoma, Lymphoblastic (93 recruiting studies) |
| 83. | Lymphoma, Mantle-Cell (108 recruiting studies) |
| 84. | Lymphoma, Mixed-Cell (92 recruiting studies) |
| 85. | Lymphoma, Mixed-Cell, Diffuse (90 recruiting studies) |
| 86. | Lymphoma, Mixed-Cell, Follicular (111 recruiting studies) |
| 87. | Lymphoma, Mucosa-Associated Lymphoid Tissue (86 recruiting studies) |
| 88. | Lymphoma, Non-Hodgkin (234 recruiting studies) |
| 89. | Lymphoma, Small Cleaved-Cell, Diffuse (91 recruiting studies) |
| 90. | Lymphoma, Small Cleaved-Cell, Follicular (111 recruiting studies) |
| 91. | Lymphoma, Small Lymphocytic (109 recruiting studies) |
| 92. | Lymphoma, Small Noncleaved-Cell (49 recruiting studies) |
| 93. | Lymphoma, Small-Cell (109 recruiting studies) |
| 94. | Lymphoma, T-Cell (108 recruiting studies) |
| 95. | Lymphoma, T-Cell, Cutaneous (80 recruiting studies) |
| 96. | Lymphoma, T-Cell, Peripheral (4 recruiting studies) |
| 97. | Lymphoma, Undifferentiated (38 recruiting studies) |
| 98. | Lymphomatoid Granulomatosis (7 recruiting studies) |
| 99. | Lymphopenia (3 recruiting studies) |
| 100. | Lymphoproliferative Disorders (463 recruiting studies) |
| 101. | Monoclonal Gammopathy of Undetermined Significance (3 recruiting studies) |
| 102. | Mucocutaneous Lymph Node Syndrome (1 recruiting study) |
| 103. | Multiple Myeloma (100 recruiting studies) |
| 104. | Mycosis Fungoides (54 recruiting studies) |
| 105. | Myelodysplastic Syndromes (172 recruiting studies) |
| 106. | Myelofibrosis (31 recruiting studies) |
| 107. | Myeloid Metaplasia (2 recruiting studies) |
| 108. | Myeloproliferative Disorders (93 recruiting studies) |
| 109. | Neutropenia (22 recruiting studies) |
| 110. | Niemann-Pick Diseases (1 recruiting study) |
| 111. | Pancytopenia (7 recruiting studies) |
| 112. | Paraproteinemias (58 recruiting studies) |
| 113. | Phagocyte Bactericidal Dysfunction (10 recruiting studies) |
| 114. | Platelet Storage Pool Deficiency (3 recruiting studies) |
| 115. | Polycythemia (16 recruiting studies) |
| 116. | Polycythemia Vera (16 recruiting studies) |
| 117. | Preleukemia (172 recruiting studies) |
| 118. | Purpura (3 recruiting studies) |
| 119. | Purpura, Thrombocytopenic (3 recruiting studies) |
| 120. | Red-Cell Aplasia, Pure (6 recruiting studies) |
| 121. | Reticuloendotheliosis (36 recruiting studies) |
| 122. | Sarcoidosis (3 recruiting studies) |
| 123. | Secondary Acute Myeloid Leukemia (49 recruiting studies) |
| 124. | Sezary Syndrome (50 recruiting studies) |
| 125. | Sickle Cell Trait (1 recruiting study) |
| 126. | Splenic Diseases (2 recruiting studies) |
| 127. | Thalassemia (9 recruiting studies) |
| 128. | Thrombocythemia, Hemorrhagic (14 recruiting studies) |
| 129. | Thrombocytopenia (15 recruiting studies) |
| 130. | Thrombocytosis (14 recruiting studies) |
| 131. | Thrombophilia (2 recruiting studies) |
| 132. | Thymus Neoplasms (1 recruiting study) |
| 133. | Vascular Hemostatic Disorders (66 recruiting studies) |
| 134. | Waldenstrom Macroglobulinemia (34 recruiting studies) |
| 135. | Wiskott-Aldrich Syndrome (3 recruiting studies) |
