Dear colleagues,

We are delighted to announce the 15th International Symposium on “Pteridines and Folates”, which will be held in Antalya, Turkey in May 9-13, 2012. The symposium will focus on the topic “conjugated and unconjugated pteridines in life sciences, biology and chemistry”. The symposium will provide clinicians, nutritionists, chemists, and specialists fascinating insights, practical expertise and the latest scientific knowledge in the field.

The aim of the symposium is to provide an opportunity to update delegates with the latest advances in scientific research, academic and clinical knowledge, as well as facilitating networking with other scientists working on this vital topic.

The symposium is attracting the leading experts in the field of pteridines. The programme consists of plenary sessions, lectures, oral presentations and two poster sessions. Several leading scientists in this field have been selected by the scientific organising committee. Significant papers will be selected from the submitted abstracts by the scientific committee, and will be offered to have the opportunity to be published as full-papers in the journal of PTERIDINES.

On behalf of the Organizing Committee, we invite you to visit the symposium and promise you a stimulating scientific meeting. We are looking forward to your participation and to welcoming you here in Antalya, Turkey, for a few days.

Prof. Dr. Terken BAYDAR Chair Hacettepe University, Faculty of Pharmacy Department of Toxicology	Prof. Dr. Ernst R. WERNER Chair Division of Biological Chemistry Biocenter, Innsbruck Medical University Innsbruck, Austria
Prof. Dr. Gönül ŞAHİN Honorary Chair Hacettepe University, Faculty of Pharmacy Department of Toxicology Eastern Mediterranean University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology	Prof. Dr. Dietmar FUCHS Honorary Chair Division of Biological Chemistry Biocenter, Innsbruck Medical University Innsbruck, Austria