We performed microarray experiments with RNAs from dissected immature anthers (stages 4-7) from wild-type, dyt1 and ams mutant plants, using the Affymetrix ATH1 chip. Overall design: Anthers from Arabidopsis thaliana were selected at 4-7 stages of early development for RNA extraction and hybridization on Affymetrix microarrays. Samples from two mutants and wild-type anther.