concentration of dilute proteins

[Kimberley Hobbs]

Hi there everyone. I would like to make an amendment to my previous post. 
I confused a few technical terms. The name of the device I used to 
concentrate my plasma samples was an ultrafiltration stir cell, not a 
gradient mixer. This device is available from Milipore and can be used to 
concentrate various proteins, enzymes, and antibodies, and can be used to 
remove viruses from solutions. There are a wide range of ultrafiltration 
disc membranes available for this device.
    
  Sorry for any confusion.
                                    Kim