The present invention pertains to the field of immunology and genetic engineering. The sneeze guard is extensible into and out of the counter to permit the assembly to be raised and lowered relative to the counter top, permitting both full service and self-service modes of operation. The core may also include air passages. The video game device controls the controlled object to act according to a position of a marker object in a captured image based on control data, after the pointer image reaches inside the predetermined area defined based on the position of the reference image. The aqueous compositions contain dispersed particles stabilized by the siloxane resin, and are useful for the entrapment and delivery of various personal, household, and medical care actives.