Magnetic 'T-Budbots' made from tea plants kill and clean biofilm

Biofilms -- microbial communities that form slimy layers on surfaces -- are difficult to treat and remove, often because the microbes release molecules that block the entry of antibiotics and other therapies. Now, researchers have made magnetically propelled microbots derived from tea buds, which they call ''T-Budbots,'' that can dislodge biofilms, release an antibiotic to kill bacteria,