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Article History

Received: 24 April 2024

Accepted: 6 November 2024

First Online: 13 November 2024

Declarations

:

: This study was carried out in strict accordance with the Act No. 246/1992 Coll., on the protection of animals against cruelty, the basic law related to animal protection governing the activities of all the state authorities of animal protection in the Czech Republic, such as the Ministry of Agriculture, including the Central Commission for Animal Welfare, and the veterinary administration authorities. The authorization to use experimental animals was issued to the Faculty of Science, Charles University, 37428/2019-MZE-18134. Study protocol was approved by the Ethical Committee of Faculty of Science, Charles University and the Ministry of Education, Youth and Sports. Title of the approved project: Cytological analysis of selected Pipidae species (<i>Xenopus</i>,<i> Hymenochirus</i>), Approval number: MSMT-20585/2022-4. Date of approval: November 3, 2022. No human cells/ tissues/ samples/ cell lines were used in this research.

: Not applicable.

: The authors declare no competing interests.