Molecular interactions on microarrays (3/3) :
			1. short targets are better able than large targets to interact 　　　　 with tethered oligonucletides 2. they are less likely to have bases hidden from duplex formation 　　　 by intramolecular base pairing 3. as they are less bulkly, they will more readily penetrate the closely 　　　 packed lawn of oligonucleotides