[Analysis of spermatozoa with flow cytophotometric determination of DNA]

Semen samples of fertility patients and fertile men were analysed by an improved technique of flow cytophotometry. The DNA-contents of mature spermatozoa were measured with a high level of accuracy. Besides spermatozoa, peaks of spermiogenetic cells and other seminal cells could be demonstrated. Complementary to the results of semen analyses the complex histograms of pulse cytophotometry investigations may give further informations on the nature of the underlying disturbances of spermatogenesis.