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Updated: Jun 29, 2026
Isolation of CD4+ T-cells and Analysis of Circulating T-follicular Helper (cTfh) Cell Subsets from Peripheral Blood Using 6-color Flow Cytometry
Published on: January 7, 2019
CC chemokine receptor 4-positive CD4(+) lymphocytes in peripheral blood increases during maturation in healthy
Nobutaka Yasuda1, Kenichi Masuda, Sadatoshi Maeda
1Animal Allergy Clinical Laboratories Inc., Kanagawa, Japan.
Abstract:
In this study, percentages of CCR4(+) cells in peripheral CD4(+) T-lymphocytes were examined with flow cytometry in 46 healthy beagles between 3 months and 7 years of age. The percentage of CCR4(+) cells varied from 9.9% to 33.5%. The mean percentage was significantly lower in the group with ages of less than 1 year than those with ages equal to or more than 1 year (p<0.05), suggesting that maturation might increase the CCR4(+) T-lymphocyte subset. No influence of aging on the percentages was detected among the groups with ages equal to or more than 1 year. The findings are useful for establishing a reference value for the percentage of peripheral CCR4(+)CD4(+) lymphocytes in dogs.
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