... (ST) and synovial fluid (SF). The inflammatory infiltrate consists pre-dominantly of B lymphocytes, T lymphocytes and macro-phages in the ST, whereas neutrophils are mainly found in the SF. The ... on the studyor coordinated the collection of samples in Birmingham, and contributed to the writing of the manuscript. JM con-ceived the study, and participated in its design and in the writing ... are B lymphocytes, T lymphocytes,macrophages and endothelial cells. The increased num-bers of B lymphocytes, T lymphocytes and macrophagesproducing CXCR5 in the RA synovium are probablyresponsible...