DEVELOPMENT AND DIFFERENTIATION OF KERATINIZED ORAL ARMATURE UNDER THE INFLUENCE OF VITAMIN A IN Bufo melanostictus STAGE 25 AND 30. J. Sci. Innov. Nat. Earth [Internet]. 2022 Jun. 21 [cited 2024 Dec. 22];2(2). Available from: https://jsiane.com/index.php/files/article/view/145