Chan A S
Cell Tissue Res. 1978 Dec 28;195(2):309-16. doi: 10.1007/BF00236727.
The ultimobranchial gland of the laying chicken consists of groups of C cells interspersed among a collection of intercommunicating follicles and ducts of variable size and shape. The epithelium lining this system ranges from squamous to columnar and includes stratified squamous and pseudostratified columnar elements. Four cell types are distinguished in this epithelium: F, mucous, C, and basal cells. F cells show microvilli and microfilaments. Pinocytotic activity and images of fusion of coated vesicles with the plasma membrane are evident. The rough-surfaced endoplasmic reticulum (RER) and the Golgi complex are moderately developed. Dense bodies are encountered apically in some cells. Mucous cells possess microvilli and secretory material in the typical form of partially fused droplets. C cells contain secretory granules and are invariably separated from the follicular lumen by other cell types. The smaller, pyramidal basal cells contain filaments, RER, small Golgi complexes, free ribosomes and hemidesmosomes. The lumina contain flocculent or granular material, cellular debris and desquamated cells. Morphological evidence demonstrates that features of the pharyngeal epithelium are retained and that the majority of the cell types, with the exception of C cells, are presumably nonendocrine.
产蛋鸡的后鳃腺由散布在一系列大小和形状各异、相互连通的滤泡和导管中的C细胞群组成。该系统的内衬上皮从鳞状到柱状不等，包括复层鳞状和假复层柱状成分。在这种上皮中可区分出四种细胞类型：F细胞、黏液细胞、C细胞和基底细胞。F细胞有微绒毛和微丝。胞饮活性以及被膜小泡与质膜融合的图像很明显。粗面内质网（RER）和高尔基体中等发达。在一些细胞的顶端可见致密体。黏液细胞有微绒毛，分泌物质呈部分融合液滴的典型形式。C细胞含有分泌颗粒，总是被其他细胞类型与滤泡腔分隔开。较小的锥形基底细胞含有细丝、RER、小高尔基体、游离核糖体和半桥粒。管腔中含有絮状或颗粒状物质、细胞碎片和脱落的细胞。形态学证据表明，咽上皮的特征得以保留，除C细胞外，大多数细胞类型可能是非内分泌性的。
