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Cells are particularly good at solving mazes, according to a 2020 Science study that demonstrates how they are able to navigate long and complicated routes through the body using self-generated chemoattractant gradients. Learn more: #ScienceMagArchives

Science Magazine

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44,926 views • 11 months ago •via X (Twitter)

Science & Technology #ScienceMagArchives

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The better humans have gotten at making plastic, the more challenging it has been to unmake it—especially the pieces too small to see. Long after plastic bottles and bags break down, they keep fragmenting into particles so tiny, conventional filtration can’t touch them. They drift through treatment plants and into waterways unimpeded. There, they enter the food chain, and ultimately the body, where they have been found in human organs and are increasingly linked to various diseases such as cancer. Enter nanobots. In a new study, researchers show that tiny magnetic machines made of cagelike materials can tumble through water, sweeping up nanoplastics via the same electrostatic attraction that makes a balloon cling to your hair. Learn more: News from Science

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Not all signalling gradients are exponentials. Dicty cells (green nuclei) migrate towards their food source, bacteria (white), concentrating the signal (bacteria) at the front and redistributing it to the rear. Side view captured by Hugh Z Ford @chubblab using a 3i diSPIM.

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