Malinow M R, McLaughlin P, Papworth L, Kittinger G W
Steroids. 1975 May;25(5):663-72. doi: 10.1016/0039-128x(75)90020-3.
A method is described to determine the mass of 7alpha-hydroxy cholesterol synthetized in vitro by liver microsomes without the use of a radioactive substrate.