title: Beta-endorphin levels in newborn cerebrospinal fluid.
mesh_terms: D001049:Apnea / Q000134:cerebrospinal fluid; D004723:Endorphins / Q000134:cerebrospinal fluid*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000134:cerebrospinal fluid; D007235:Infant, Premature, Diseases / Q000134:cerebrospinal fluid; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin