Georgieva R, Gerov K
Anat Anz. 1975;137(1-2):12-15.
Several periods of intensive growth are observed in the development of the fundus of pig's stomach: at the end of the 2nd and the beginning of the 3rd month of embryogenesis, the periods shortly prior to and after birth, and between the 10th and 20th day following birth. The gastric pits are formed at about the 45th day of embriogenesis. At the beginning of the third month the fundic glands are formed. The parietal cells first differentiate and are found in 60-day old embryos. The mucous neck cells are differentiated at the beginning of the 3rd month but secretion of mucoid substance starts on about the 45th to 50th day of the prenatal development. With increasing age of the pigs the quantity of PAS-positive substances in the surface epithelium, as well as in the mucous neck cells gradually increases. The differentiation of the chief cells rich in RNA occurs approximately on the 90th day of the prenatal development.
胚胎发育第2个月末和第3个月初、出生前后不久以及出生后第10天至第20天之间。胃小凹大约在胚胎发育第45天形成。在第三个月初，胃底腺形成。壁细胞首先分化，在60日龄的胚胎中可以发现。黏液颈细胞在第3个月初分化，但黏液物质的分泌大约在产前发育的第45至50天开始。随着猪年龄的增长，表面上皮以及黏液颈细胞中PAS阳性物质的数量逐渐增加。富含RNA的主细胞的分化大约发生在产前发育的第90天。
