Table 4. Classifications based upon highest 5, 10, 25, 50 and 100 F statistics in each direction (up- and down-regulation).

Platform A	Platform B	Highest 5	Highest 10	Highest 25	Highest 50	Highest 100
Agilent	Affymetrix	1/10 10%	2/20 10%	12/50 24%	27/100 27%	70/200 35%
Amersham	Affymetrix	1/10 10%	1/20 5%	9/50 18%	17/100 17%	52/200 26%
Amersham	Agilent	2/10 20%	3/20 15%	9/50 18%	24/100 24%	64/200 32%

The number of genes found common to the technologies in either the up- or down-regulated sets over the total number in both sets found by each technology and the percentage this represents is reported.