Links have also been made based on serology and the presence of viral proteins as well as of viral sequences.

The theory is this: The viral sequences may be helping set up the genetic mutations that propel the process of evolution.

Human breast cancer has been correlated with leukemia in humans and viral sequence has been found in these cancers.

This allows R:S calculations to be applied to viral sequences whose ancestral sequence is unclear or unknown.

"But the simple fact of identifying a viral sequence does not automatically lead to development of a vaccine."

Research in this area is conducted using molecular phylogenetics, comparing viral genomic sequences to determine relatedness.

This tool helps identify the genotype of a viral sequence.

Male wasps contain the viral sequence, but do not have the capacity to produce it.

We're recoding it to recognize this particular viral sequence.

Thus, divergent viral sequences may be found in a single host organism.