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.
5. Preheat the oven to 350ÂºF (about 180ÂºC). Sweet potatoes can stand up to a variety of temperatures, so if you are cooking something else, go ahead and put the potatoes in at a different temperature, just make sure to adjust your cooking time.lace sweet potatoes on your roasting tray and put in the oven. If cooking at 350ÂºF, roast for about an hour. Check on the potatoes after about 45 minutes.