| http://www.w3.org/ns/prov#value | - Satisfactory colloids which can be used for this purpose include any of the hydrophilic colloids generally employed in the photographic field, including, for example, gelatin, colloidal albumin, polysaccharides, cellulose derivatives, synthetic resins such as polyvinyl compounds, including poly(vinyl alcohol) derivatives, acrylamide polymers and the like.
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