Cook slowly on low heat for 40 minutes. Allow the onion to caramelize in its own natural sugars during this time. 5. Try a shortcut if you lack the time to do this by microwaving. 1  Slice as usual, place in a microwave proof dish and cover it. 2  Place in the microwave and zap until soft.  Do not add water.
Ribosomes happen to be basophilic.]. Chief cells of the stomach secrete the digestive enzymes (pepsins) of the stomach and have the typical appearance of serous-secretory epithelial cells. Secretory vesicles (containing pepsinogen) are clearly visible in the apical cytoplasm of chief cells.
Olfactory Epithelium. The olfactory epithelium consists of 3 cell types: basal, supporting, and olfactory receptor cells. Basal cells are stem cells that give rise to the olfactory receptor cells (seen in the image below). The continuous turnover and new supply of these neurons are unique to the olfactory system. In no other location in the mature nervous system do less differentiated stem cells replace neurons.