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effective half-life

   Also found in: Dictionary/thesaurus, Medical, Financial, Wikipedia 0.01 sec.
effective half-life [ə¦fek·tiv ′haf ‚līf]
(nucleonics)
The half-life of a radioisotope in a biological organism, resulting from a combination of radioactive decay and biological elimination.


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For example, low doses of vitamin C are retained in the body and have an effective half-life of somewhere between eight and forty days.
In the liver, chemicals can be secreted into the bile and transported into the gut, where they are reabsorbed into the portal blood, thereby increasing the effective half-life for systemic clearance.
These extend to efficacy and safety, but also to important issues in drug development such as stabilization and the extension of effective half-life without affecting bioactivity," said Mr.
 
 
 
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