The human genome contains a large number of endogenous retroviruses (HERVs). Their reactivation has frequently been observed in patients with cancer. Considering their role in the carcinogenesis process. we aimed to study the possible relationship between HERVs gene expression and Chronic Lymphocytic Leukemia (CLL). https://parisnaturalfoodes.shop/product-category/brain-b-12-1000mcg/