A combined device includes a frame unit that has support braces located to provide support for a person entering or exiting the device and which are located to provide maximum stability to the device, even if the user has impaired balance, yet will not interfere with use of the device with a table or a desk. The introduction tube allows passage of a vapor-liquid two-phase fluid in a swirling state. The invention also embodies vectors and host cells for the propagation of said nucleic acid sequences and the production of said muteins. The second image is interleaved with the first image.