A tissue separator assembly has an elongate tubular member and a tissue separator device located at a distal end of the elongate tubular member. The system measures gas level or exchange in the field or laboratory. Once the encrypted session is established, the client device communicates the address of the target server device to the proxy device. To achieve high mobility, the depth at which the buried channel region is formed is optimized, and the ratio between buried channel region junction depth source and drain region junction depth is made to be within 0. The addition of elastomeric polymers and polyurethanes help provide enhanced wash stability and chemical stability. The system is monitored and one or more known symptoms generated by the system are detected.