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. Preheat oven and wash the sweet potatoes: Preheat oven to 375Â°F. Scrub the sweet potatoes well and pat them dry with a dish towel. 2. Oil them up: Prepare squares of aluminum foil for as many sweet potatoes as you are roasting. Place each potato on a foil square and drizzle with a small amount of vegetable oil. Using your hands, rub the oil in a thin, even layer all over the potatoes. 3. Prick with a fork, wrap, and roast: Prick each sweet potato several times with a fork and wrap loosely in the foil. Be sure the foil is well-sealed.