Abstract: A method for generating a cell support interface for use in a three dimensional cell culture environment, may include electrospinning a mat having an epithelial support layer configured to create an intimate coupling between the epithelial cell and a porous matrix, including a first layer and a second layer, wherein the first layer is formed using a first solution at a first viscosity level and the second layer is formed using a second solution at a second viscosity level different from the first viscosity level.

Abstract: The present disclosure describes a systems and methods to rapidly detect a level of a drug present in a fluid sample. The systems and methods can be used to monitor drug levels in the blood of a patient to whom the drug has been prescribed. A system can include one or more organic electrochemical transistors that are functionalized with a coating that may include aptamers or antibodies. The coating can bind or otherwise interact with the drug of interest to change the transconductance of the organic electrochemical transistors. The system can detect a change in the transconductance of the organic electrochemical transistors and signal the presence of the drug.