Sterling silver (an alloy of 92 percent silver, blended with copper and other metals) gives a lustrous appearance to coins, jewelry, and silverware. The fact that pure silver is slightly harder than gold, but still very ductile and malleable, makes it a natural choice for dental fillings.
Ultrasound detected papillary projections in 78% of tumors. Papillary projections were disseminated in 33% of malignant, 20% of borderline, and 0% of benign tumors (p = 0.0049). The mean size of the papillary projections was 9.6, 15.7, and 35.3 mm in benign, borderline, and malignant tumors, respectively (p = 0.0007).
The taste system consists of 3 types of taste papillae, on which taste buds are located. Fungiform papillae, which are mushroom shaped structures, are located towards the front of the tongue. Each fungiform papillae usually contains 3-5 taste buds. Circumvallate papillae are located towards the back of the tongue, and unlike fungiform papilla, they each contain more than 100 taste buds. The ridges and grooves located along the sides of the tongue are foliate papillae. Like circumvallate papillae, foliate papillae also contain more than 100 taste buds each. A fourth type of papillae, filiform, also exists, but does not contain any taste buds. Each taste bud consists of 30-100 taste receptor cells. Taste receptor cells are long, thin cells oriented perpendicular to the surface of the tongue. One end of the taste each taste receptor cell is exposed to the oral cavity and has microvilli on itâs surface to increase contact with stimuli.