en زیست شناسی پزشکی Medical Biology مقاله مروری Review Article So far, many studies have been conducted on the importance of expressing different genes in humans and zebrafish. In this regard, the expression of OCT4, HOX and SOX genes as influential genes in the embryonic period is very thought-provoking. At different embryonic stages, including morula, middle blastula, gastrula, and segmentation, the expression of these genes is very important in the growth, immunity, tissue repair, and viability of different cells. The aim of this study was to investigate the expression of common genes between humans and zebrafish in the embryonic period and their efficiency in different parts of the body.<br> <span dir="RTL"></span> Gene expression, Zebrafish, Embryonic development, OCT4, HOXA10, SOX9 1 15 http://modernmedlab.com/browse.php?a_code=A-10-240-1&slc_lang=en&sid=1 Mehdi Ahmadifar mehdi_ahmadifar67@yahoo.com 10031947532846001771 10031947532846001771 Yes Department of Embryology, Royan Institute’s Reproductive Biomedicine, Royan Institute, Tehran, Iran.; Department of Biology, Faculty of Sciences, University of Science and Culture, Tehran, Iran. Zeinab Jarban zeynab.jarban@yahoo.com 10031947532846001772 10031947532846001772 No Department of Biology, collage of science, University of science and culture, ACECR, Tehran branch, Iran Mohammad Mahdi Gordan shahabhakhamanesh@gmail.com 10031947532846001773 10031947532846001773 No Department of Biology, collage of science, University of science and culture, ACECR, Tehran branch, Iran Sadaf Reihani reihanisadaf77@gmail.com 10031947532846001774 10031947532846001774 No Department of Biology, collage of science, University of science and culture, ACECR, Tehran branch, Iran