In fact, someone began ringing the church bells which usually signified a fire. The sentry called for help, setting up the clash which we now call the Boston Massacre. A group of soldiers led by Captain Thomas Preston came to the rescue of the lone sentry. Captain Preston and his detachment of seven or eight men were quickly surrounded. All attempts to calm the crowd proved useless. At this point, the accounts of the event vary drastically.
chief cells - One of the two glandular epithelial cell types located in the basal half of gastric glands; they synthesize and secrete pepsinogen, the inactive precursor to the proteolytic enzyme pepsin; they appear smaller and with a more darkly staining granular cytoplasm than the neighboring parietal cells.
Parathyroid chief cell. Parathyroid chief cells (also called parathyroid principal cells or simply parathyroid cells) are cells in the parathyroid glands which produce parathyroid hormone. The end result of increased secretion by the chief cells of a parathyroid gland is an increase in the serum level of Calcium. Parathyroid chief cells constitute one of the few cell types of the body that regulate intracellular calcium levels as a consequence of extracellular (or serum) changes in calcium concentration.