Table 1.

list of all published microarray platforms for microRNA expression studies. (August 2007)

					detection of
Reference	technology	amplificationa	direct microRNA labelling	RetroTranscriptiona	size selectionb	mature form	precursor form
(Liu, Calin et al. 2004)	microarray oligo	no	no	yes	no	yes	yes
(Babak, Zhang et al. 2004)	microarray oligo	no	no	no	no	yes	yes
(Barad, Meiri et al. 2004)	microarray oligo	yes	no	yes	yes	yes	yes
(Miska, Alvarez-Saavedra et al. 2004)	microarray oligo	yes	no	yes	yes	yes	no
(Nelson, Baldwin et al. 2004)	microarray oligo (RAKE)	no	yes	no	yes	yes	no
(Thomson, Parker et al. 2004)	microarray oligo	no	no	no	yes	yes	no
(Sun, Koo et al. 2004)	microarray oligo	no	no	yes	no	yes	no
(Baskerville and Bartel 2005)	microarray oligo	no	no	yes	yes	yes	no
(Goff, Yang et al. 2005)	microarray oligo	no	yes	no	yes	yes	no
(Liang, Li et al. 2005)	microarray oligo	no	no	no	yes	yes	no
(Shingara, Keiger et al. 2005) Ambion	microarray oligo	no	yes	no	yes	yes	no
(O’Donnell, Wentzel et al. 2005)	oligo array	no	yes	no	yes	yes	no
(Castoldi, Schmidt et al. 2006)	microarray oligo (LNA)	no	yes	no	no	yes	no
(Fang, Lee et al. 2006)	LNA+gold nanoparticles	no	yes	no	no	yes	no
(Mattie, Benz et al. 2006)	microarray oligo	no	no	yes	not specified	yes	no
(Beuvink, Kolb et al. 2007)	microarray + evanescent resonator	no	yes	no	yes	yes	no
(Fan, Chen et al. 2007)	microelectrod- biosensor PNA probes	no	no	no	no	yes	no

^abefore hybridization

^bsize selection of RNA