| http://www.w3.org/ns/prov#value | - For example, and without limitation, blood samples can be centrifuged to separate fractions including whole cells or membranes from serum, feces samples can be sectioned and homogenized with physiologically acceptable buffer and detergent (see, e.g., U.S. Pat. Nos. 5,741,650, 6,503,718), and sputum samples can be liquefied and fractionated.
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