41. Knockout studies in mice suggested that this cytokine plays an essential role in lymphoid cell survival. 42. At this point the T cells leave the primary lymphoid organ and enter the blood stream. 43. Lymphoid nodules form at the point of attachment of the worms in the bronchi and trachea.44. The protein encoded by this gene is a member of the lymphoid tissue and transformed cells. 45. LTBR is also essential for development and organization of the secondary lymphoid organs and chemokine release. 46. Lymphoid interstitial pneumonia was originally included in this category, then excluded, then included again.47. The disease is also characterized by an enlarged liver due to infiltration of cancerous lymphoid cells. 48. No virus was detected by either study in nonmalignant lymphoid samples and other cancers used as controls. 49. Mature lymphocytes recirculate between the blood and the peripheral lymphoid organs until they encounter their specific antigen. 50. The substance of a lymph node consists of lymphoid follicles in an outer portion called the hilum.
