The invention is directed to compositions and methods for the detection of a malignant condition, and relates to the discovery of soluble forms of mesothelin polypeptides, including mesothelin related antigen. If a child or employee is using the device, there may be a need to regulate how that device can be used and to determine who will pay for what goods or services. The first nanotubes are connected to the second nanotubes. The resulting electronic component is capable of sensing magnetic fields and may be used in a variety of circuits such as compasses and magnetometers. The method may not only achieve the function of discharging water in advance, but also automatically shut off the water output in a certain time period, so as to save water. The first fluid ejector ejects at least a drop of the bioactive fluid onto the ingestible sheet.