The scientific illustration depicts a lateral flow device primarily used in diagnostics. The device features a circular sample application area on the left and a rectangular result window on the right, labeled with 'C' for control and 'T' for test, both typically indicating the presence of a detected substance. The device is predominantly white and used for point-of-care testing in clinical settings. It represents a biosensor technology in medical diagnostics, employing immunoassay techniques for the detection of specific analytes.