The Arabidopsis Genome ATH1 Array, designed in collaboration with TIGR, contains more than 22,500 probe sets representing approximately 24,000 genes. The array is based on information from the international Arabidopsis sequencing project that was formally completed in December, 2000.
Tomato is an important food crop worldwide, and the GeneChip™ Tomato Genome Array is designed specifically to monitor gene expression in tomato (Lycopersicon esculentum). The comprehensive array consists of over 10,000 L. esculentum probe sets to interrogate over 9,200 L. esculentum transcripts.