A proteome chip probed with anti-GST antibodies.

A. 6566 protein samples representing 5800 unique proteins were spotted in duplicate on 
a nickel-coated slide.  The slide was probed with anti-GST antibodies.  

B. An enlarged image of one of the 48 blocks.  The letters indicate the duplicated 
protein samples, and the numerical numbers represent the source plate numbers.  
Note the excellent resolution and high signal-to-noise ratios.