Spontaneous "transformation" of lymphocytes from the umbilical-cord vein.
D000818:Animals; D001803:Blood Transfusion; D046508:Culture Techniques; D006651:Histocytochemistry; D006801:Humans; D008214:Lymphocytes / Q000378:metabolism*; D014470:Umbilical Cord; D014471:Umbilical Veins; D014680:Veins