It was found that the history of the gland in relation to metamorphosis is essentially the same in all. Previous to metamorphosis the gland is small, and the cells very poor in cytoplasm. At the beginning of metamorphosis (i.e., rapid hind leg growth) the thyroid shows a marked ...
Fig. 2 Histological features of thyroid gland at stage 26—46 2.3 黑斑蛙发育过程中T3 激素水平变化 黑斑蛙发育过程下颌中 T3 的水平如图 3 所示, 整体变化趋势是: 在变态前的发育阶段中, T3 含量 增长缓慢, 进入变态期后, T3 含量迅速升高, 在变 态高峰期达到峰值, 随后慢慢下降。具体而言, 在 ...
Development of the Pituitary and Thyroid Gland in the Medaka,Oryzias latipes Histological, histochemical and autoradiographic studies were carried out to determine the development time of cell types in the pituitary gland of the medaka (Oryzias latipes) embryo and fry. The relationship between the app...
The history of the prenatal development of the human thyroid gland is organized here into a series of stages as follows (Table 3): A. The primordial development: early differentiation stage (3 to 13 mm CRL, 5 to 7 weeks), B. The preparatory development: preparatory differentiation stage (14...
*, Kennichi Kakudo2 and Shioko Kimura1 The ultimobranchial body (UBB) and thyroid primordium are the origins of the thyroid gland that fuse around embryonic day 14.5 of mouse gestation, ultimately giving rise to calcitonin-producing C cells and thyroglobulin-producing follicular cells, respectively...
Maternal lifestyle factors, including smoking and increased body weight, increase risks of adult diseases such as metabolic syndrome and infertility. The fetal thyroid gland is essential for the control of fetal metabolic rate, cardiac output, and brain development. Altered fetal thyroid function may ...
At birth, a cold-stimulated short-lived TSH surge is observed, followed by a TSH decrease until day 3 or 4 of life by T4 feedback inhibition. Disorders of thyroid gland development and/or function are relatively common, affecting approximately one newborn infant in 2000–4000. The most ...
Histometric and radioiodine uptake and release determinations were made to relate structural aspects and functional activity of the thyroid gland of the albino rat. Age groups were used to follow functional changes of the thyroid gland as related to development....
Development of immunoreactive somatostatin in C-cell complexes in the thyroid gland of the dog In connection with our previous finding that an intense immunoreaction to somatostatin transiently appears in thyroid C cells of the dog during early fetal... D Yokokameda - 《Cell & Tissue Research》 ...
One day old chicks of Japanese quail were exposed to different photoperiods (LD, 8:16, 13.5:10.5, 16:8 and LL) and observations (testes weight, cloacal gland size, body weight and circulating thyroxine and triiodothyronine) were taken at the age of 3, 5, 7, 9 and 16 weeks. Results...