➀ Traditional biosensors face challenges in blood due to rapid degradation, limiting real-time monitoring capabilities;
➀ Researchers developed the SENSBIT system, inspired by the gut's protective structure, using a 3D nanoporous gold surface and mucosal-like coating for enhanced stability;
➂ The sensor retained over 70% signal after a month in human serum and functioned for a week in live rats, enabling early infection detection and advancing personalized healthcare.