Fig. 7.

T cell responses to 1,25(OH)₂D₃correlate directly with capacity for phenotype change. Bidirectional plot of fold change in frequency of the population (Th17 blood (Bld), Th17 synovial fluid (SF), Th17.1 Bld, Th17.1 SF, Th1 Bld, Th1 SF) after seven day culture under control conditions versus the ratio of the population frequency in the presence versus the absence of 1,25(OH)₂D₃. Correlation significance was tested by Pearson's analysis and the linear regression line with 95% confidence interval (hashed line) is shown.