Endocrine cells secrete by exocytosis into the fluid surrounding the cell. Endocrine cells may either be single cells or aggregations of cells and secrete hormones that serve as chemical messengers. Aggregations of endocrine cells, such as the thyroid, adrenal or pituitary glands, are ductless. 2.
1 Arrange the potatoes on your food dehydrator trays, making sure the potatoes don't overlap. 2  Turn on your food dehydrator and set the temperature between 125Â°F and 135Â°F (or per your food dehydrator's instructions). 3  Potatoes will be leathery and/or brittle when fully dried. 4  Drying time for potatoes: between 6-14 hours.
1 Bake for 45 minutes for sweet potatoes/yams that are 2-3 inches in diameter. 2  For sweet potatoes that are up to 4 inches in diameter, bake for an hour. 3  For super large sweet potatoes, bake for an hour and 15 minutes. 4  After the time has elapsed, don't open the oven but turn it off. For sweet potatoes that are up to 4 inches in diameter, bake for an hour. 2  For super large sweet potatoes, bake for an hour and 15 minutes. 3  After the time has elapsed, don't open the oven but turn it off. 4  Let the sweet potatoes sit in the oven for at least 30 minutes but up to an hour.