Difference in the concentration of tryptophan metabolites between maternal and umbilical foetal blood

Diagnosis of the respiratory distress syndrome by amniocentesis

Louis Gluck, Marie V. Kulovich, Robert C. Borer et al. · American Journal of Obstetrics and Gynecology · 1971 · 910 citations

Medicine, Maternal Health, Obstetrics +10

Human indolylamine 2,3-dioxygenase. Its tissue distribution, and characterization of the placental enzyme

Fumio Yamazaki, Takashi Kuroiwa, Osamu Takikawa et al. · Biochemical Journal · 1985 · 242 citations · Full text

Life Sciences, Biochemistry, Enzymology +11

Some characteristics of a protein-coated ODS column and its use for the determination of drugs by the direct injection analysis of plasma samples

H. Yoshida, Ikue Morita, Gen Tamai et al. · Chromatographia · 1984 · 94 citations

Pharmacy, Pharmaceutical Analysis, Pharmaceutics +16

Quantification of kynurenic acid in cerebrospinal fluid: effects of systemic and central l-kynurenine administration

Melvyn P. Heyes, Bonnie J. Quearry · Journal of Chromatography B Biomedical Sciences and Applications · 1990 · 53 citations

Medicine, Neuroscience, Pharmacology +4

Determination of tryptophan and its metabolites in human plasma and serum by high-performance liquid chromatography with automated sample clean-up system

Ikue Morita, Makoto Kawamoto, Masayasu Hattori et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1990 · 43 citations

Pharmacy, Biochemistry, Pharmaceutical Analysis +16