Percent-free PSA may be related to biologic activity of the tumor.
Anecdotal reports of biologic activity indicate that some patients may respond to combined octreotide and interferon alpha treatment.
During its development at Immunex Corporation an earlier monomeric version did not have sufficient biologic activity.
Since there was no biologic activity on early Earth there would be no isotopic fractionation.
Some individual measurements of therapeutic effect (tender-joint counts) and biologic activity (IL-6 levels) were observed.
Furthermore, the biologic activity of various over-the-counter supplements has yet to be determined and is far from standardized.
WaveScreen which allowed for the direct examination of a wide range of biologic activities and access was offered on a fee-for-service basis.
This site of modification was found to be the most tolerant position to introduce novel structural changes without impairing biologic activity.
And in any case, the original biologic activity I spotted didn't come from here.
In the first stage, the investigator attempts to rule out drugs which have no or little biologic activity.