There are also several cases suggesting that APs are linked to AS [23], [24], but whether this happens only in experimental conditions or universally exist at the genomic level in physiological condition is not known.
Furthermore, problems that universally exist among various PoEs are often related to issues in general structure, which can never be resolved by the individual PoEs alone.
Instead, we have shown that reliable phylogenetic information can be extracted even from proteins that are not universally distributed or exist in multiple paralogs allowing the tree to appear from the forest.
Multihost parasites are usually considered to be generalists; however, this is not universally true, and several examples exist in which generalist parasites are structured into subpopulations that are host specialized (7).
The first obvious observation is that the TGF- β pathway genes do not exist in protozoans but are universally present in metazoans.
Panem, with the wealthy capitol at its heart and the 12 districts where "ordinary" people exist in poverty is the world that Katniss must fight against in Suzanne Collins's universally popular The Hunger Games.
Since muscles exist in many different sizes and shapes with a complex functional and anatomical organisation, 16 development of a universally applicable terminology and classification is challenging.
To determine if racial differences exist in receipt of minimally invasive hysterectomy (defined as total vaginal hysterectomy [TVH] and total laparoscopic hysterectomy [TLH]) compared with an open approach (total abdominal hysterectomy [TAH]) within a universally insured patient population.
"The Downside of Cohabiting Before Marriage," by Meg Jay (Sunday Review, April 15), is proof of the truism, universally acknowledged, that cohabitation exists in the shadow of marriage.
This asymmetric arrangement is universally conserved indicating that it already existed in the universal ancestor.
