Journal of Steroid Biochemistry and Molecular Biology39(1991),19–25; DOI10.1016/0960-0760(91)90007-r. Initial-only first byline retained. Abstract: human luteinized granulosa-cell culture48h with/without hCG or FSH; progesterone/pregnenolone production and aromatase activity assayed separately. Used as a functional study of luteinized cells,not as proof of complete in-vivo luteinization from one hormone measurement.