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List of Illustrations and Figures
2.1. Types of twins showing possible arrangements of chorion and
amnion. 		14
2.2. Identical twins in which only one is affected with Down's
syndrome. 		17
4.1. Examples of minor physical anomalies of the toes. 49
4.2. Finger ridge count in identical twins discordant for
schizophrenia. 		57
5.1. Age of divergence of 27 discordant twin pairs. 87
6.1. MRI scans from 4 identical twins discordant for schizophrenia
showing varying degrees of ventricular dilatation in the
affected twin compared to the well twin. 		107
6.2. Cerebral ventricular size in identical twins discordant for
schizophrenia; percentage difference of affected twin
minus well twin. 		109
6.3. Hippocampus-amygdala size in identical twins discordant
for schizophrenia; percentage difference of affected twin
minus well twin. 		110
6.4. MRI scans of identical twins discordant for schizophrenia, in
which the well twin has markedly enlarged cerebral ventricles
and the affected twin has ventricles within normal limits. 		114
7.1. PET scan study of 31-year-old identical twins discordant for
schizophrenia. 		121
7.2. Total scores for neurological abnormalities. 134

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Publication Information: Book Title: Schizophrenia and Manic-Depressive Disorder: The Biological Roots of Mental Illness as Revealed by the Landmark Study of Identical Twins. Contributors: E. Fuller Torrey - author. Publisher: Basic Books. Place of Publication: New York. Publication Year: 1994. Page Number: xxv.
    
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