Because sweat secretion is facilitated by mechanical contraction of sweat gland structures, understanding their structure-function relationship could lead to more effective treatments for patients with sweat gland disorders such as heat stroke. Conventional histological studies have shown that sweat glands are three-dimensionally coiled tubular structures consisting of ducts and secretory porti...

Discrepant and incomplete interpretations of fruits of Pterodon have been published, especially on the structural interpretation of the pericarp portion that remain attached to the seed upon dispersal. The present work clarified these doubts and analyzed ultrastructural aspects of the Pterodon emarginatus diaspores using light and transmission electron microscopes. Cell divisions are prevalent ...

Parotid and submandibular glands in human fetuses at 16, 18 and 24 weeks of gestation were studied by electron microscopy. The salivary glands of the 16 week fetus were composed of primary ducts and terminal buds. The primary duct was double layered and consisted of inner glycogen-rich ductal cells and outer myoepithelial precursor cells. The terminal bud was a cell cluster which consisted of g...

The secretory end-pieces of the submandibular gland of rats during the first week of postnatal development are studied with regard to the fine structure of the secretion granules in these end-pieces. The terminal ends of the secretory ducts during this period consist of two types of cells; one cell is an acinar-type and the other is a duct-type found in the gland of adult rats. The secretion gr...

We describe a gland in the arthrodial membrane of coxa-trochanter articulation fourth pair legs Neotropical harvester Mischonyx squalidus Bertkau, 1880. Externally glandular area has rough appearance with pores on its surface, folds membrane. Internally, secretory cells have spherical vesicles, smooth endoplasmic reticulum, mitochondria and ducts that exit from cross Histochemical tests indicat...

Since secretory component is thought to be a normal glandular epithelial cell product, surgical specimens from patients with mammary carcinoma, an epithelial cancer, were studied with antisera to human free secretory compo nent by indirect immunofluorescence microscopy. Normal breast tissue (10 cases) showed fluorescent epithelial cells confined to normal ducts. This was in marked contrast to i...

Purpose The role of cystic fibrosis transmembrane conductance regulator (CFTR) in lacrimal gland (LG) function has only recently received some attention, mainly from our group. In the present study, we investigated the potential changes of LG pathology, tear secretion, ocular surface integrity, and fluid secretion in isolated LG ducts from CFTR knockout (KO) mice. Methods Tear production and ...

The female genital organs of the tetrablemmid Indicoblemma lannaianum are astonishingly complex. The copulatory orifice lies anterior to the opening of the uterus externus and leads into a narrow insertion duct that ends in a genital cavity. The genital cavity continues laterally in paired tube-like copulatory ducts, which lead into paired, large, sac-like receptacula. Each receptaculum has a s...

The human mammary gland is composed of 15-20 lobes that secrete milk into a branching duct system opening at the nipple. Those lobes are themselves composed of a number of terminal duct lobular units made of secretory alveoli and converging ducts. In mice, a similar architecture is observed at pregnancy in which ducts and alveoli are interspersed within the connective tissue stroma. The mouse m...

India ink introduced into the pancreatic ducts of the cat can escape into the interstitium at pressures below the maximum secretory pressure of the pancreas. The ink appears to leave through clefts between the acinar cells.