Karakterisasi kandidat protein alergen serbuk sari kelapa sawit elaeis guineensis jacq serta pengujian aktivitasnya terhadap produksi iga ige igg igm dan ifn gamma pada peripheral blood mononuclear cell pbmc secara in vitro = Characterization of protein allergen candidate from oil palm elaeis guineensis jacq pollen and its activities to iga ige igg igm and ifn gamma production in peripheral blood mononuclear cell pbmc by in vitro