DNA polymerases are proteins that synthesize new DNA strands using preexisting DNA strands as templates. Before one cell divides to produce two cells, the DNA containing the genetic information in it must be duplicated for the new cell, in a process...

A DNA polymerase is an enzyme that assists in DNA replication. Such enzymes catalyze the polymerization of deoxyribonucleotides alongside a DNA strand, which they "read" and use as a template. The newly-polymerized molecule is complementary to the...

Dr. Arthur Kornberg, a biochemist who received the 1959 Nobel Prize in physiology or medicine for the test-tube synthesis of DNA, died of respiratory failure Friday at Stanford Hospital. He was 89.Kornberg, an active professor emeritus of biochemistry at Stanford University's School of Medicine, shared...

Dr. Arthur Kornberg, whose test-tube synthesis of DNA earned him the Nobel Prize in 1959, died of respiratory failure Friday at Stanford Hospital, the hospital said. He was 89.Kornberg, an active professor emeritus of biochemistry at Stanford University's School of Medicine, shared the Nobel Prize...

Dr. Arthur Kornberg, whose test-tube synthesis of DNA earned him the Nobel Prize in 1959, died of respiratory failure Friday at Stanford Hospital, the hospital said. He was 89.Kornberg, an active professor emeritus of biochemistry at Stanford University's School of Medicine, shared the Nobel Prize...

Vivian Aplin-BrownleeWASHINGTON (AP) — Former Washington Post editor Vivian Aplin-Brownlee, who raised an early alarm concerning a Pulitzer Prize-winning story about an 8-year-old heroin addict who didn't actually exist, died Oct. 20. She was 61.Aplin-Brownlee died of complications from leukemia at her home in Washington,...