A selection valve for use with a multi-chambered fluid container having outlet openings in communication with the fluid container chambers. Vehicle seat 10 may include input side switching mechanism 50 that receives an input of a manipulating force, and output side switching mechanism 70 that is actuated in synchronization with input side switching mechanism 50. In a particularly advantageous embodiment, the cells of the preparation are human embryonic stem cells, have normal karyotypes, and continue to proliferate in an undifferentiated state after continuous culture for eleven months. The first control unit controls the plurality of data transferring unit in response to a column select signal to select a column of a memory cell. The second mating section is made of insulating material.