A daughter parasite forms through budding from the mother cell.
As budding of the daughter parasite progresses and membrane protrusion increases (yellow), the molecular safety rope (blue) lengthens.
The images were created based on electron microscopy data and processed using AI.
© UKHD
Figure EV1: Blood-stage immunofluorescence expression profile of PfSFA2 and ultrastructure expansion microscopy (U-ExM) of PfSFA1 localization.
(A) IFA of PfSFA2-smV5 expression across the asexual blood stages, stained with an anti-V5 antibody (green), an anti-PfGAP45 antibody (magenta), and Hoechst (DNA, blue). “Ring” stage with one nucleus, trophozoite stage (“Troph”) with 2, and several stages throughout schizogony, including segmentation, are shown with the number of nuclei. The minimum and maximum displayed values for the PfSFA2-V5 and PfGAP45 channels follow the “Reset” values of the first segmentation image. Scale bars: 2 µm. (B) U-ExM of PfSFA1-smV5 schizonts stained with an anti-V5 antibody (cyan), an anti-CrCen antibody (outer-CP, magenta), SYTOX (DNA, blue), and an NHS ester-conjugated dye (grayscale). Sub-z-slices of a 7-nuclei (top) and a 14-nuclei (bottom) schizont are maximally projected and shown to the left. Representative centriolar plaque regions are numbered and shown as insets to the right. Z-depth of each maximum projection is shown to the right. Scale bars: 5 µm for full schizont; 1 µm for inset.
Creationists insist that certain biological systems are too complex to have evolved. If several interacting components are required for a system to function, they label it “irreducibly complex”; if genes encode proteins that perform a particular function, they call the DNA “complex specified information”. Both are then presented as evidence that the system must have been deliberately designed by an intelligent agent.
Curiously, however, this supposedly reliable design-detection method tends to be applied only to systems that creationists find impressive or beneficial. When comparable complexity enables a parasite to invade its host, evade its defences, reproduce rapidly and cause suffering and death, the inference to design is quietly abandoned. The parasite is instead blamed on “the Fall”, “genetic degeneration” or some other evidence-free theological excuse.
But a method that gives different answers according to whether its conclusion is theologically convenient is not a method at all. If molecular complexity, functional interdependence and genetically encoded organisation really demonstrate intelligent design, then they must do so just as reliably in a malaria parasite as in a bacterial flagellum, an eye or a blood-clotting system. And that would make them evidence not merely of intelligent design, but of intelligent malevolent design.
Two recent studies have now uncovered more of the extraordinarily elaborate machinery by which malaria parasites multiply. Instead of dividing into two daughter cells in the familiar way, Plasmodium parasites repeatedly copy their DNA and multiply their nuclei within a shared cell before producing numerous daughter parasites more or less simultaneously. The process must ensure that each viable daughter receives a nucleus and the cellular structures required to invade another host cell.
































