L S de Villiers

Stability of pyridoxal-5-phosphate semicarbazone: Applications in plasma vitamin B6 analysis and population surveys of vitamin B6 nutritional status

Job Ubbink, W J Serfontein, L S de Villiers · Journal of Chromatography B Biomedical Sciences and Applications · 1985 · 164 citations

Life Sciences, Biochemistry, Nutritional Sciences +14

Antibody Response in Children with Protein Malnutrition

Pieter Pretorius, L S de Villiers · American Journal of Clinical Nutrition · 1962 · 51 citations

Life Sciences, Immunology, Pediatrics +14

Plasma pyridoxal-5-phosphate level as risk index for coronary artery disease

W J Serfontein, Job Ubbink, L S de Villiers et al. · Atherosclerosis · 1985 · 43 citations

Medicine, Cardiology, Pharmacology +15

Effect of different levels of oral pyridoxine supplementation on plasma pyridoxal-5′-phosphate and pyridoxal levels and urinary vitamin B-6 excretion

Job Ubbink, W J Serfontein, Piet Becker et al. · American Journal of Clinical Nutrition · 1987 · 29 citations · Full text

Life Sciences, Nutrition, Nutritional Sciences +17

Analytical recovery of protein-bound pyridoxal-5′-phosphate in plasma analysis

Job Ubbink, W J Serfontein, L S de Villiers · Journal of Chromatography B Biomedical Sciences and Applications · 1986 · 24 citations

Life Sciences, Biochemistry, Protein Biochemistry +3