Long-term gender behavioral vulnerability after nociceptive neonatal formalin stimulation in rats

▶ 4% formalin stimulation at postnatal Day 1. ▶ Behavioral consequences in adulthood. ▶ Newborn-stimulated females: higher anxiety. ▶ Male-stimulated rats: lower exploratory, higher protective positioning. ▶ Non-stimulated rats: females with lower nociception thresholds, more depressive.