The June 2024 LOCOTACT Lecture was held by the renowned paediatric endocrinologist Olaf Hiort from the Universität zu Lübeck and the University Hospital Schleswig-Holstein. The speaker of the CRC sexdiversity raised the question "Do we have to (re-)define sex in biomedical research", explained the effect of hormones on the regulation of sex development and pointed out the complexity of defining biological sex. 

We are delighted that Prof. Hiort accepted our invitation and would like to thank him for raising important questions in an inspiring lecture and for the fruitful discussion.