INTESTINAL OBSTRUCTION DUE TO A CONGENITAL MESENTERIC HERNIA IN A NEWBORN WITH CYSTIC FIBROSIS: A CASE REPORT



Behavioral Correlates of 50-kHz Ultrasonic Vocalizations in Rats: Progressive Operant Discrimination Learning Reduces Frequency Modulation and Increases Overall Amplitude

Ultrasonic vocalizations (USVs) in rats are thought to contain ecological signals reflecting emotional states.These USVs are centered on 50-kHz, and frequency modulation (FM) is hypothesized to indicate positive emotion; however, results from recent studies are inconsistent with this hypothesis.We suspected that such inconsistencies might result fr

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