Post-capillary venules as the pathway for migrating B lymphocytes.
D000818:Animals; D001345:Autoradiography; D001402:B-Lymphocytes / Q000378:metabolism / Q000502:physiology*; D001853:Bone Marrow / Q000378:metabolism; D001854:Bone Marrow Cells; D002196:Capillaries / Q000033:anatomy & histology; D003037:Cobalt Radioisotopes; D008198:Lymph Nodes / Q000378:metabolism / Q000528:radiation effects; D008297:Male; D008643:Mesentery; D051379:Mice; D008809:Mice, Inbred C3H; D010581:Peyer's Patches / Q000033:anatomy & histology; D011830:Radiation Effects; D013950:Thymus Gland / Q000502:physiology; D013997:Time Factors; D014316:Tritium; D014529:Uridine / Q000378:metabolism; D014680:Veins / Q000033:anatomy & histology*
D003037:Cobalt Radioisotopes; D014316:Tritium; D014529:Uridine