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Time: 2024-03-28T08:31:08Z
URL: http://scholar.google.com/scholar_lookup?title=Cerebrospinal+fluid+and+serum+neopterin+and+biopterin+in+D-retrovirus-infected+rhesus+macaques+%28Macaca+mulatta%29%3A+relationship+to+clinical+and+viral+status.&year=1991&author=Heyes&journal=AIDS.&volume=5&pages=555-560&pmid=1863408