This volume aims to contain most of the knowledge needed to pass the Part 1 MRCOG. The authors have revised much of the text and asked new authors to contribute. These new contributions cover areas where knowledge is expanding such as cell biology and molecular biology, biochemistry and immunology. Professor Dunlop, previous chairman of the Part 1 MRCOG examination committee, has also contributed a chapter on strategy concerning multiple choice questions and the Part 1 MRCOG examination.