[Forensic value of morphologic-morphometric sperm differentiation in the study of stains. II: Use in criminal practice].

On the basis of the results gained by applying the morphologic-morphometric sperm differentiation in 42 cases of sexual offence 36 individuals could not be excluded as the source of sperm traces (36 criminal offences with 105 sperm traces). Another 100 individuals wer excluded as the source by means of the comparative sperm test. The influence of exogenic and endogenic factors on the sperm image has been discussed, especially in the context of the criminal orientated problem. Thus, possible changes of the analysable sperm image may be recognized in the ejaculate and, consequently, in the sperm trace in time relation to the effect of a harmful event only after several weeks up to months.