Results of some cancer researches show that a number of hormones in ceratin tumors are growing up. Often, the majority of these hormones are produced by tumor cells or by an unknown origin in the neoplastic area. Also, it is clear that some of these ectopic hormones are produced only by specific tumors. In addition, different effects of these abnormally produced hormones on the immune system are shown in recent years. Thus, we decided to study the hormonal status of patients with chronic lymphocytic leukemia (CLL) patients. The results of this study showed that the LH and FSH levels in the majority of patients are rising above normal while testosterone level in many of them is decreased. In the next step, we are going to study the immunological effects of LH, FSH, and testosterone one the lymphocyte function in vitro.

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