Inforzato de Lima M A
Acta Anat (Basel). 1978;101(2):153-9. doi: 10.1159/000144961.
Presence and distribution of lipid were studied in the lining epithelia of three regions of the pigeon (Columba liva) crop: lateral lobes, median region near the cervical esophagus and median region near the thoracic esophagus. During the resting phase of the 'milk gland', insulated lipid droplets were observed within the lining epithelium of the three regions studied. On the other hand, during the activity of the 'milk gland' (under action of exogenous prolactin and in natural incubation), only the lateral lobes showed a remarkable increase in the amount of lipid, whereas both median regions showed only an inexpressive increase of lipid within their epithelium.
研究了家鸽（Columba liva）嗉囊三个区域的内衬上皮中脂质的存在和分布情况：外侧叶、靠近颈段食管的中间区域以及靠近胸段食管的中间区域。在“乳腺”的静止期，在所研究的三个区域的内衬上皮中观察到了绝缘脂质小滴。另一方面，在“乳腺”活动期间（在外源性催乳素作用下和自然孵化时），只有外侧叶的脂质含量显著增加，而两个中间区域上皮内的脂质仅表现出不明显的增加。
