Localization of Ag1, showing dual immunofluorescence staining of Ag1 with human monospecific antibodies against Ag1 or control serum, a Immunofluorescence of trophozoites with human anti-Ag1 antibodies, b DNA staining of trophozoites, c Immunofluorescence with control serum, d DNA staining of schizonts, e Immunofluorescence of schizonts with human anti-Ag1 antibodies, f DNA staining of schizonts. Antibodies showed clear reactivity with trophozoite- and schizont-infected erythrocytes localized on the surface of the parasites. Neither individual merozoites within the schizont nor free merozoites were labelled.

Jakobsen PH, Jepsen S, Riley EM, Theander TG, Grellier P, Lihme A, Hviid L, Dziegiel M, Schrevel J. Biochemical characterization, localization and immunostimulating properties of a soluble glycoprotein, Ag1, isolated from in vitro cultures of Plasmodium falciparum. Parasitol Res. 1990;76(8):657-61.