Dear colleagues, we have plant raw materials (air-dried leaves) of 3 Central Asian relict tree species collected from natural populations growing in the south-east of Kazakhstan. Who has the desire and opportunity to conduct a study of extracts from the leaves of these plants by HPLC and test these extracts for biological activity, and write joint articles. The phytochemical composition of these plants has not yet been studied. If anyone is interested in this offer, please, write to me. I have the opportunity to bring these plant samples to your organization.