| CPC A61L 27/50 (2013.01) [A61L 27/16 (2013.01); A61L 29/041 (2013.01); A61L 29/146 (2013.01); A61L 31/048 (2013.01); A61L 31/14 (2013.01); F16L 11/11 (2013.01); F16L 11/115 (2013.01); B29C 55/04 (2013.01); B29K 2027/18 (2013.01); D01D 5/0007 (2013.01); D01D 5/0076 (2013.01); D01D 5/18 (2013.01); D01F 6/12 (2013.01); Y10T 442/60 (2015.04); Y10T 442/626 (2015.04); Y10T 442/643 (2015.04); Y10T 442/681 (2015.04)] | 23 Claims |

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1. A polymeric material comprising:
a membrane comprised of serially deposited polymeric fibers, the polymeric fibers having been stretched in a first direction after the fibers are serially deposited; and
pores between the deposited polymeric fibers, wherein the average pore diameter is from 1 μm to 10 μm.
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