Our new device - "Medical ultraviolet (UV) blood irradiator for selective photophysical exposure "CIT-A "", created jointly with JSC "Ciclon-Test", received a registration certificate (RC) from Roszdravnadzor No. RZN 2021/15867 dated November 25, 2021 and can now be used in practical healthcare throughout the Russian Federation. The irradiator CIT-A is intended for UV-exposure to nucleic acids during their transcription and replication in the treatment of patients with malignant and autoimmune diseases, in particular, with T-cell lymphomas of the skin. The device has been in development for about 7 years. The development and even the enterprise developing the device were trying to take away from us by vikings from St. Petersburg. However, our MD, prof. Kildyushevsky A.V. and the developers from JSC "Cyclon-Test" survived, went through all the difficulties and brought the development to the RC. Congratulations to all! For more details see soon here.