One of the major differences between DNA and RNA is the sugar, with 2-deoxyribose being replaced by the alternative pentose sugar ribose in RNA. The four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T).ne of the major differences between DNA and RNA is the sugar, with 2-deoxyribose being replaced by the alternative pentose sugar ribose in RNA. The four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T).
Common bile duct stone, also known as choledocholithiasis, is the presence of gallstones in the common bile duct (thus choledocho- + lithiasis). This condition causes jaundice and liver cell damage, and requires treatment by cholecystectomy and/or ERCP. 1  1 Signs and symptoms.  2 Causes.
Human Anatomy Â» Digestive System Â» Cystic Duct. Cystic duct is one of the bile ducts, which convey bile to the duodenum. It is about 1.5 inches long and connects the neck of the gallbladder to the common hepatic duct to form the common bile duct.t is about 1.5 inches long and connects the neck of the gallbladder to the common hepatic duct to form the common bile duct.