MATERIALS OF XVTH RUSSIAN FORUM WITH INTERNATIONAL PARTICIPATION IN MEMORY OF ACADEMICIAN V.I. IOFFE "IMMUNOLOGY DAYS" IN ST. PETERSBURG, JUNE 1-4, 2015 (THESES NOT INCLUDED IN SPECIAL ISSUE OF THE MEDICAL IMMUNOLOGY JOURNAL, 2015, VOL. 17) - Editorial article (Медицинская иммунология, 2015)