Dental Specialties in US. The American Dental Association recognizes nine dental specialties in which dentists can get additional training and practice in addition to or instead of general dentistry: 1  Dental public health-Study of dental epidemiology and social health policies.
Trichinella spiralis is a parasitic worm that causes the disease Trichinosis. A whipworm is a roundworm that infects the large intestine. Whipworms are found commonly in pork and are often called pork-worms. They are also found in rats, humans, dogs and cats.
There are 5 related classes in the phylum Echinodermata (the Latin name means spiny-skinned). For a detailed list with all classifications click here: Sea star or starfish (Asteroidea) Brittle stars, basket stars, serpent stars (Ophiuroidea)