The mammary gland is an extremely unusual organ because it is undeveloped at birth. The mammary gland is just a collection of cells inside the teat when a dairy calf is born, and only then does its development truly begin.

The edible onion, Allium cepa, is a cultivated species in the Allium genus. All members of Allium have important dietary and medicinal properties. While water and carbohydrates make up a large majority of the fresh onion, fiber, flavonoids and alk(en)yl cystein sulfoxides (ACSOs) confer many of the purported health benefits and aroma properties.