It has been used to find interactions between RNA and protein (one protein but many RNA species per analysis).

However, the number of RNA species that may be simultaneously observed using these approaches is usually limited to only one transcript at a time.

There are four low-molecular-weight RNA species (ccRNAs) found associated with cadang-cadang disease.

Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins.

These size fractions were then sequentially injected into Xenopus oocytes to ultimately find the RNA species that induced the expression of sodium-glucose cotransport.

Northern hybridization experiments detected two RNA species expressed from the smr7C locus, which accumulated differentially in free-living and endosymbiotic bacteria.

Consistent with this, the number of known examples of pairs of RNA species with the potential to form long sense-antisense duplexes has increased steadily.

However, as ESTs represent fragments of the full transcripts, we cannot be certain about this until the full-length RNA species are cloned.

The exosome is involved in the degradation and processing of a wide variety of RNA species.

The importance of these unstable RNAs and their degradation are still unclear, but similar RNA species have also been detected in human cells.