CD4 and ovarian carcinoma: During a study in 17 ovarian carcinoma patients from West Norway (Bergen region), comparing different CD3+CD4+ and CD3+CD8+ tumour-associated lymphocyte (TAL) populations derived from the ascites fluid with patient peripheral blood mononuclear cells (PBMCs) [31], two patients were incidentally discovered to display an unusual distribution between naïve and memory T cells.