• rats
  • consequently, old rats had the lowest 5-HIAA/5-HT ratio, an index of pineal 5-HT turnover. (semanticscholar.org)
  • Freund's adjuvant treatment increased pineal 5-HT turnover exclusively in old rats, an effect mainly seen during the second part of the activity span. (semanticscholar.org)
  • function
  • OBJECTIVES This study was performed to search for changes in rat pineal function attributed to age and immunization with Freund's adjuvant. (semanticscholar.org)