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Swiss researchers have developed small robots capable of "swimming" in the human body to deliver the drug to diseased tissue.
The robot, developed by researchers at the Swiss Federal Institute of Technology in Zurich and Lausanne, measures around 5 millimeters and allows easy navigation in the narrow canals of the human body.
These robots can change shape and speed, allowing them to cross blood vessels and heavy body fluid, the Daily Mail reported.
The so-called robots are composed of a heat-resistant gel, as well as nanomagnetic particles, according to the study authors published in the journal Science Advances.
To move the robots efficiently, the scientists were inspired by the bacteria, which move from one place to another using a tail like a propeller or a whip.
The scientists tested the robots in a viscous fluid similar to that of the blood and showed their movement quickly.
"These devices have a special structure that allows them to adapt to the properties of the fluid in which they move," said Salman Sakar, a researcher who develops robotics.
"When you face a change in viscosity or composition, the shape changes to maintain its speed and maneuverability, without losing control of the direction of movement," he said.
Robot shape modifications can be programmed in advance to increase their efficiency.
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