Calcium and cyclic AMP are important in the stimulation of insulin release. The
phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine (IBMX) raises islet cAMP levels …

D-Glucose, but not L-glucose or 3-O-methyl-D-glucose, stimulates 45Ca2+ uptake by both
lanthanum-displaceable and lanthanum-nondisplaceable pools in pancreatic islets. The …

The role of Ca2+ in the secretion of insulin and glucagon was investigated by studying the
effects of Ca2+ ionophores on hormone secretion from isolated perifused islets of …

Calcium concentrations of various pancreatic B cell organelles have been determined by X-
ray microanalysis of areas of frozen sections of unfixed rat islets of Langerhans. Highest …

The cytoplasm of the rat isolated fat cell contains a highly organized, interconnected system
of smooth endoplasmic reticulum having close association with the central lipid mass, mito …

The form of the smooth endoplasmic reticulum in dorsal root axons is described in thick (1
μm) and thin sections of rat dorsal roots previously impregnated with lead and copper. When …

Application of the K-pyroantimonate technique combined with glutaraldehydeosmium
fixation results in a reproducible intracellular distribution of mineral precipitates in the mouse …

Uptake of 45Ca2+ by a microsomal fraction isolated pancreatic islets of non-inbred ob/ob
mice was studied. ATP strongly stimulated 45Ca2+ uptake, the maximum effect being …

Subcellular calcium localization in the endocrine cells of rat pancreas was studied by the
pyroantimonate precipitation technique. Calcium-containing electron-dense deposits in the …

Potassium pyroantimonate has been employed in this study to localize calcium in the
vascular smooth muscle of the thoracic aorta of the rabbit. The pyroantimonate ion …