‘Delivery trucks’ modeled after the microbes could help scientists target disease in the body.
On their own, the amoebas meander about. With a small styrene ball stuck to them,. The team can’t say precisely what the optimum carrying capacity of the amoebas is, but they achieved their highest speeds with cargo between 30 and 60 microns in diameter — an impressive load for the tiny microbes.
Beta and his team also found that the microbes moved the balls along in bursts that increased in length for increasingly large balls. But the larger the ball, the less frequently the amoebas moved it at all. This combination of effects ensures that there’s a sweet spot that will be best for cellular trucks, as Beta calls them, with comparatively large steps occurring frequently enough to speed the trucks on their way to dropping off medicine or microscopic building materials.
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