For citations:

Malakhaeva A.N., Lyashova O.Yu., Plotnikov O.P., Osin A.V. Maintenance of Francisella tularensis 15 RIEH and Brucella abortus 19 BA Strains in a Viable State by Means of Deep Freezing. Problems of Particularly Dangerous Infections. 2015;(1):63-66. (In Russ.) https://doi.org/10.21055/0370-1069-2015-1-63-66