The RISH Positive Control Probe is composed of a mixture of 1 oligonucleotide complementary to the poly-A tail of mRNA. It is supplied as stable ready-to-use reagents labelled with biotin. The positive control Probes should give positive hybridisation sig Know more at: http://www.creative-bioarray.com/RISH-Positive-Control-BIO-Probe-ISHP-040-item-4783.htm