Case of the Week 239

Here is a nice and straight-forward case to start off 2013!

The following objects were found in urine from a Nigerian immigrant.  The urine was first filtered through a Nucleopore filter, and then the filter was viewed microscopically.  Note the small scattered holes in the background; these are the holes of the filter. 

Identification?
Special thanks to Heather A. for dontating this case!