https://123doc.org/document/5275972-che-bien-thu-nghiem-yaourt-chuc-nang-tu-sua-dau-nanh.htm
https://123doc.org//document/2225046-dac-diem-sinh-truong-cua-vi-khuan-lactic-sinh-bacteriocin-tren-moi-truong-mrs-va-tren-ca-gio-nguyen-lieu-tuoi.htm
https://123doc.org//document/2932783-xay-dung-quy-trinh-xac-dinh-dinh-tinh-dinh-luong-bifidobacterium-longum-trong-cac-che-pham-probiotics.htm
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