| http://www.w3.org/ns/prov#value | - One of ordinary skill in the art will appreciate that the material in which the cells 102 and channels 103 are formed can depend on factors such as the type of fluid (e.g., air or other gas, water, gel, etc.) contained in the cells 102.In various embodiments, and as illustrated in FIG. 1A, the cells 102 of pad 100 are arranged in a number of columns 104 and rows 106.
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