| http://www.w3.org/ns/prov#value | - Dimpled surfaces were not found to work as well as grooved surfaces. [0018] According to one aspect of the present invention there is therefore provided a medical device suitable for use in the mammalian body, especially the human body, wherein at least a portion of the outer surface of the device comprises a series of grooves which have: [0019] (i) a depth of 5 to 100 micrometers, [0020] (ii) a w
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