A method for preparing probes, as well as several probes for use in qualitative or quantitative hybridization assays are disclosed. The method comprises constructing an oligonucleotide that is sufficiently complementary to hybridize to a region of rRNA selected to be unique to a non-viral organism or...http://www.google.com.au/patents/US6150517?utm_source=gb-gplus-sharePatent US6150517 - Methods for making oligonucleotide probes for the detection and/or quantitation of non-viral organisms