Lymphocytes
Last reviewed: 23.04.2024
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Lymphocytes - the main cellular element of the immune system - are formed in the bone marrow, actively function in the lymphoid tissue.
The main function of lymphocytes is to recognize the foreign antigen and participate in the immunological response of the body. In children up to 4-6 years in the total number of leukocytes, lymphocytes predominate, that is, they have absolute lymphocytosis, after 6 years there is a "cross" and neutrophils predominate in the total number of leukocytes.
Lymphocytes are actively involved in the pathogenesis of immunodeficient conditions, infectious, allergic, lymphoproliferative, oncological diseases, transplantation conflicts, and autoimmune processes. With these processes, the number of lymphocytes in the blood can change significantly. As a result of an adequate response to antigenic stimulation, the number of lymphocytes increases - lymphocytosis, with an inadequate response, the number of lymphocytes can decrease - lymphopenia.
Reference values (norms) of absolute and relative contents of lymphocytes in the blood
|
Age |
Absolute amount, × 10 9 / l |
Relative quantity,% |
|
12 months |
4-10.5 |
61 |
|
4 years |
2-8 |
50 |
|
6 years |
1.5-7 |
42 |
|
10 years |
1.5-6.5 |
38 |
|
21 year |
1-4.8 |
34 |
|
Adults |
1-4.5 |
34 |
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