Knockout of SEMP1 by gene disruption has no detectable phenotype. C: Immunofluorescence assays of fixed RBCs infected with SEMP1-KO parasites, probed with α-MAHRP1, α-SBP1, α-REX1 and α-PfEMP1 antibodies. The parasite nuclei were stained with DAPI.. Dietz O, Rusch S, Brand F, Mundwiler-Pachlatko E, Gaida A, Voss T, Beck HP. Characterization of the small exported Plasmodium falciparum membrane protein SEMP1. PLoS One. 2014 9(7):e103272. PMID: 25062022