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This is to certify that your paper entitled «Investigating in-vitro antimicrobial activity, biosynthesis, andcharacterization of silver nanoparticles, zinc oxide nanoparticles, andsilver-zinc oxide nanocomposites using Pistacia Atlantica Resin» was indexed with 1 pages, in the CIVILICA citation database, code COI:MEDISM23_109, after evaluation and approval of the referees of the "Twenty-third International Congress of Microbiology of Iran held in Tehran 2022.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.