A preliminary note on the composition of lymphocytes in human peripheral lymph.

Pilot experiments on the composition of lymphocytes in human peripheral lymph, mainly from healthy human volunteers, are presented. The experiments undertaken so far show a reduced proportion of B cells and an increased proportion of "Ia" positive lymphocytes in peripheral lymph as compared to peripheral blood. If confirmed, these data would suggest that lymphocyte circulation through extravascular subcutaneous tissues is a highly selective process.