PfHsp70x knockout does not inhibit export of PfEMP1 to the host cell. PfHsp70x knockout does not inhibit export of PfEMP1 to the host cell. Asynchronous 3D7 and PfHsp70x-KO parasites were fixed with acetone and stained with antibodies against the ATS domain of PfEMP1 and MAHRP1. DAPI was used to stain parasite cell nucleus. The images from left to right are phase, DAPI (blue), PfEMP1 (green), MAHRP1 (red), and fluorescence merge. Representative images are shown. David W. Cobb et al. mSphere 2017; doi:10.1128/mSphere.00363-17