Martinez, A M; Padbury, J F; Barberie, L M et al. (1992) Elevated plasma Met-enkephalin levels in the human newborn are a poor indicator of perinatal stress. Am J Obstet Gynecol 166:1429-35
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Martinez, A; Padbury, J; Chappell, B et al. (1991) Maturational changes in expression of enkephalin peptides in adrenal and extra-adrenal tissue of fetal and adult rabbits. Brain Res Bull 26:935-40
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Martinez, A M; Padbury, J F; Burnell, E E et al. (1991) Plasma methionine enkephalin levels in the human newborn at birth. Biol Neonate 60:102-7
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Martinez, A M; Padbury, J F; Burnell, E E et al. (1990) The effects of hypoxia on (methionine) enkephalin peptide and catecholamine release in fetal sheep. Pediatr Res 27:52-5
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Padbury, J F; Martinez, A M (1988) Sympathoadrenal system activity at birth: integration of postnatal adaptation. Semin Perinatol 12:163-72
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Martinez, A; Padbury, J; Shames, L et al. (1988) Naloxone potentiates epinephrine release during hypoxia in fetal sheep: dose response and cardiovascular effects. Pediatr Res 23:343-7
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