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Assay using porosity-reduction to inhibit migration

  • US 6,472,226 B1
  • Filed: 09/08/2000
  • Issued: 10/29/2002
  • Est. Priority Date: 10/02/1998
  • Status: Expired due to Term
First Claim
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1. A device for assaying spermatozoa, comprising:

  • a labeling zone containing at least one label which binds to the spermatozoa in their presence and through which spermatozoa can flow in communication with;

    a porous capture zone having a pore size such that all or substantially all of the label which is not bound to the spermatozoa can flow therethrough, whereas all or substantially all of the spermatozoa-bound label cannot.

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