Purification and characterisation of glutathione transferase from the giant African snail, Archachatina marginata.

1. Glutathione-S-transferase has been purified from the hepatopancreas of Archachatina marginata to homogeneity. 2.

Neuroblastoma, an under-diagnosed tumour: a 7-year experience in Zaria.

The features of neuroblastoma and outcome of its management in 15 Nigerian children seen in the Ahmadu Bello University Teaching Hospital, Zaria over a 7-year period are described. The majority were between the ages of 3 and 5 years and the male:female ratio was 2.75:1.

Isolation and properties of creatine kinase from the breast muscle of tropical fruit bat, Eidolon helvum (Kerr).

Creatine kinase, from fruit bat breast muscle, has been purified to homogeneity. The mol. wt of the enzyme was estimated to be about 78,000-80,000 with two subunits of 42,500.

Is there a step-wise migration in Nigeria? A case study of the migrational histories of migrants in Lagos.

"The paper sets out to test whether or not the movement pattern of people in Nigeria is step-wise. It examines the spatial order in the country and the movement pattern of people. It then analyzes the survey data and tests for the validity of step-wise migration in the country.

Studies on the amino groups of myosin-ATPase. II. Localization of the amino groups.

1-5 of the epsilon-amino groups of myosin were trinitrophenylated by 2,4,6-trinitrobenzene sulphonate. The Mg2+-activated ATPase activity was found to increase twenty fold while the K+-activated ATPase was strongly inhibited as a result of this treatment. Myosin was dissociated by urea after trinitrophenylation and its heavy and light chains were isolated.

Enzymic properties of different types of human erythrocyte glucose-6-phosphate dehydrogenase, with characterization of two new genetic variants.

Enzymic properties have been compared in the following five genetic variants of glucose-6-phosphate dehydrogenase from human erythrocytes: the two common variants with normal activity, A and B; the common variant associated with enzyme deficiency, A-; and two new rare variants, "Ijebu-Ode" and "Ita-Bale."The maximal velocity of the enzyme reaction (V(max)) increases steadily with pH over the entire range explored (from pH 5.5 to 9.