Thomas Helleday
![](https://mb.cision.com/Public/206/2673563/a4a60a422a30f86f_800x800ar.jpg)
Photographer: Ulf Sirborn
Thomas Helleday, Professor at the Department of Oncology-Pathology, Karolinska Institutet, Sweden. Photo: Ulf SirbornPhotographer: Ulf Sirborn
Thomas Helleday, Professor at the Department of Oncology-Pathology, Karolinska Institutet, Sweden. Photo: Ulf SirbornKAROLINSKA INSTITUTET PRESS OFFICE Opening hours: Monday–Friday 09.00–17.00 CET. Karolinska Institutet – a medical university ki.se