The fruit has nutritive and medicinal values. Tadpoles lacking the obligate nutritive egg diet do not contain the alkaloid. Vegetables and other ingredients are added to improve taste and nutritive value. Their nutritive tissue (endosperm) is oily and farinose. Desiccated liver is sold in caplets to be consumed purely for the nutritive benefits. This also permits them to subsist on food with lower nutritive value than smaller animals. However, when dried, pollen quickly loses its nutritive value. Some lettuces have almost no nutritive value. Functions of PDL are supportive, sensory, nutritive, and remodelling. Saps, in particular, serve a nutritive function that resins do not. Looking at roles Qi is divided into "Defensive Qi" and "Nutritive Qi". The leaves are of high nutritive value. Instead, the nucellus produces a nutritive tissue termed "perisperm". McKinley had been given nutritive enemas; on September 11, he took some broth by mouth. The breasts have two main roles in human society&colon; nutritive and sexual.