Treatment 1
Treatment 2
Treatment 3
Treatment 1
Treatment 2
Treatment 3
Gene
A
cDNA
library
Microarray
expression
Two
dimensional electrophoresis
Treatment 1
Treatment 2
Treatment 3
Serial
analysis of gene expression
Gene
A
B
C
A
B
C
A
B
C
Sequencing
Database
1
2
Expression
regulation
Common
database
3
4
5