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Which is the precursor of all pyrimidine ribo- and deoxyribonucleotides?
Serum Peak
The highest concentration of a drug in the bloodstream after it has been administered.
Trough Level
The lowest concentration of a drug in the bloodstream, usually measured just before the next dose is due.
Anaphylactic Reaction
A severe, potentially life-threatening allergic response that requires immediate medical intervention.
Idiosyncratic Reaction
An unusual or unexpected reaction to a drug that is not related to the dose or duration of exposure.
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