Regulatory micro RNA molecules (miRNA) were discovered in C. elegans but it has

Regulatory micro RNA molecules (miRNA) were discovered in C. elegans but it has become apparent that these molecules regulate gene expression in higher organism by a relatively conserved mechanism. Usually they down regulate gene expression. Significantly it has become known that miRNAs can act as oncogenes and tumour supressors.Six confirmed late stage cancerous tumour biopsies of the same tissue origin are available to you as well as samples of adjoining normal tissue from each. Also you have a diverse set of normal and cancer cell lines of the same tissue origin available in your toolbox.