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Abstract

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1) °©»ó¼± ¹ß´ÞÀÇ ÃÖÃÊÀÇ º¯È­´Â 4°ÁÖ¿¡ median pharyngeal wallÀÇ ±¸ÇüÀÇ ºñÈÄ·Î ³ªÅ¸
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2) Å»ý Á¦ 6ÁÖ¿¡´Â ¾ç¿±À¸·Î ºÐÈ­µÇ°í ¸Í°ø(foramen cecum)¿¡¼­ °æºÎ·ÎÀÇ ÀÌÁÖ°úÁ¤¿¡
ÀÖ¾ú´Ù. óÀ½¿¡´Â two cell cord¸¦ ÀÌ·ç´Ù°¡ Å»ý Á¦ 7ÁÖ°æºÎÅÍ´Â Á» ´õ º¹ÀâÇØÁ® µÚ¾ûŲ ¾ç
»óÀ» º¸¿´´Ù.
3)Å»ý Á¦ 9ÁÖ¿¡ óÀ½ ¿©Æ÷Çü¼ºÀÌ °üÂûµÇ¾úÀ¸¸ç Àû¾îµµ Á¦14ÁÖ¿¡ ±³ÁúÀ» °¡Áø ¿©Æ÷°¡ ó
À½ º¸¿´´Ù. ÇÑÆí Å»ý Á¦18ÁÖ ÀÌÈÄ¿¡´Â ºÐ¿±È­°¡ ¶Ñ·ÇÇØ Á³´Ù.
4) Å»ý Á¦24ÁÖ ÀÌÈÄ¿¡´Â Å« ¿©Æ÷ÀÇ ºÐÆ÷°¡ °í¸£°Ô ³ªÅ¸³µ°í 34ÁÖ°æ ÀÌÈÄ¿¡´Â °ÅÀÇ ¾î¸¥
°ú µ¿ÀÏÇÑ ¼Ò°ßÀ» º¸¿´´Ù.
5) Ç× thyroglobulin Ç×ü (Antithyroglobulin antic odd)¸¦ ÀÌ¿ëÇÑ PAP¿°»ö°á°ú °©»ó¼±È£
¸£¸ó »ý¼º´ÉÀº ÅÂ·É ¾à 10ÁÖºÎÅÍ ½ÃÀ۵Ǿú´Ù.
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To evaluate the morphogenesis of the human thyroid, a histologic study was made
based on 100 normal thyroid of human embryos and fetuses ranging in age from 4 to
42 weeks of gestation. The embryos were serially sectioned and fetuses were
examinated as an individual organ.
Following observations were made :
1) The first sign of thyroid primordium was the spherical proliferation of median
ventral pharyngeal wall at the 4 th week of development.
2) At the 6 th week of gestation, the thyroid differentiated into two lobes that were
connected by an isthmus, and was on the way of migration to the definite position from
the foramen cecum.
3) The developing thyroid consisted of two cell cords, solid nests or interconnecting
complex pattern until 14 th week of gestation, when the entire portion of thyroid was
replaced by follicles of variable size.
4) At the 9 th week, the first follicle was recognizable at the periphery of the gland.
5) At the 14 th week, follicles were partly filled with faintly eosinophilic colloid.
6) After the 18 th week of gestation, lobulation of the thyroid parenchyme was a
prominent feature.
7) After the 24 th week, large follicles with rich colloid content are distributed
through both superficial and deep portions. And after the 34 th week, maturation reached
the general pattern of adult thyroid.
8) The ability of thyroglobulin synthesis which was confirmed by PAP method, was
first recognized at the 10 th week of gestation.

Å°¿öµå

Development of thyroid.;

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