I. Current Views on Androgen Receptors and Mechanism of Androgen Action.- 1. Introduction.- 2. Effect of Androgens on Various Tissues.- 3. Uptake, Retention and Metabolism of Androgens in Responsive Tissues.- 4. Androgen Receptors.- 5. Androgen Receptor in Human Tissue.- 6. Occurrence of Multiple Steroid Hormone Receptors in Target Organs.- References.- II. Determination of Androgens by Competitive Protein-Binding Method and Radio-immunoassay.- 1. Competitive Protein-Binding Method.- 2. Radioimmunoassay.- References.- III. Nachweis und chemische Bestimmung von C19-Steroiden (Androgenen).- 1. Biotest-Methoden.- 2. Chemische Bestimmungsmethoden.- Literatur.- IV. Biologische Auswertung der Androgene.- 1. Die Leydigzellen.- 2. Der Einflu? der Zuf?hrungsart auf die Wirksamkeit der Androgene.- 3. Die Auswertung an Fischen.- 4. Die Auswertung an Amphibien.- 5. Die Auswertung an Reptilien.- 6. Die Auswertung an V?geln.- 7. Die Auswertung an S?ugetieren.- Anhang: Der Fructose-Test.- Literatur.- V. Klinik der Androgene.- Literatur.- VI. Antiandrogens.- 1. Introduction.- References.- 2. Action of Antiandrogens on Different Organs and Functions.- 3. Various Further Effects of Antiandrogens.- 4. Methods of Testing Antiandrogens.- VII Clinical Uses of Antiandrogens.- 1. Introduction.- 2. Diseases of Prostate.- 3. Dermatological Conditions.- 4. Precocious Puberty.- 5. Control of Fertility.- References.- VIII Administration of Antiandrogens in Hypersexuality and Sexual Deviations.- 1. 1. Androgens and Sexual Instinct.- 1.2. Androgen Concentrations and Sexual Activity and Androgen Concentrations in Different Sexual Disturbances.- 2. Inhibition of Sexuality in Men by Antiandrogens (Cyproterone Acetate).- References.- Author Index.