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T:B lymphocyte ratio in GCF is:

# T:B lymphocyte ratio in GCF is:
A. 1:3
B. 2:1
C. 3:1
D. 1:1



The correct answer is A. 1:3

The ratio of T lymphocytes to B lymphocytes was found to be reversed from the normal ratio of about 3:1 found in peripheral blood to about 1:3 in GCF. 

Ref: Carranza's Clinical Periodontology, 12th Edition, Page no 216.

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