The book chapter “Biosensing and Drug Delivery at the Microscale: Novel Devices for a Controlled and Responsive Drug Delivery” published in the Handbook of Experimental Pharmacology vol. 197: Drug Delivery has been retracted by the authors because its current version is based on a preliminary manuscript with incorrect quotations, references, and partly identical wording wiht other original manuscripts.

The authors declare that they have done everything to correct this error to prove their intention to satisfy all parties concerned.

The authors deeply regret the errors.