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Table 2 Frequency of γδ T lymphocytes in the peripheral blood of healthy PPD skin test-positive children, healthy PPD skin test-negative children, and PPD skin test-positive children with primary tuberculosis

From: In vivo γδ T Cell Priming to Mycobacterial Antigens by Primary Mycobacterium tuberculosis Infection and Exposure to Nonpeptidic Ligands

Children Category

Proportion of CD3+ Cells (Mean ± Standard Error)a

γδ +

Vγ9Vδ2+

Vδ2/CD45RO+

Healthy PPD+ (n = 46)

5.6 ± 0.5%

4.3 ± 0.4%

3.0 ± 0.4%

Healthy PPD (n = 17)

5.3 ± 0.6%

4.0 ± 0.5%

3.2 ± 0.3%

TB patients PPD+ (n = 27)

5.2 ± 0.6%

4.1 ± 0.4%

3.2 ± 0.4%

  1. aThe absolute numbers of γδ T cells (mean ± standard error) in healthy PPD+: 84 ± 36 γδ+ cells/µl (n = 46); healthy PPD: 79 ± 33 + cells/µl (n = 17); TB patients PPD+: 78 ± 39 γδ+ cells/µl (n = 27).