Badger, A M The production of proliferation inhibitory factor (pif) by mouse spleen cells in vitro. [electronic resource] - Journal of immunology (Baltimore, Md. : 1950) Apr 1974 - 1435-43 p. digital Publication Type: Journal Article ISSN: 0022-1767 Subjects--Topical Terms: AnimalsCells, CulturedConcanavalin ACulture MediaDNA--biosynthesisLectinsLymphocytes--immunologyMiceMice, Inbred C57BLMice, Inbred CBAMice, Inbred StrainsSpleen--cytologyThymidine--metabolismTritium