Subsequent hitch-hiking and (or) background selection effects can differentially affect the pre-existing level of polymorphism at linked loci.
In this case neither of the pre-existing senses is general enough to subsume the other.
Psychiatric side-effects, including hallucinosis, are a concern in elderly people, especially if there is pre-existing cognitive impairment.
Why do pre-existing arrangements fail to establish markets for environmental goods and assets?
In normal wound healing, angiogenesis (new blood vessel formation from pre-existing vessels) occurs in areas undergoing repair.
Since the subsequent crystallization to form the orbicules only took place around discrete cores, all other pre-existing nuclei must have been removed.
However, the group posited as most desiring of divided government, ideological moderates, should not care about pre-existing partisan control of government.
It is a pre-existing bus with a well-defined payload capacity.
