發(fā)布日期：2006-04-15 來(lái)源：- 作者：297 x 154 像素
核心提示：a) Double-stranded DNA (blue and black interwoven strands)
is shown aligned in antiparallel orientation. b) The strands are
separated and primers (light blue and gray arrows) bind to
the 3' ends along with DNA polymerases (ovals). The dNTPs
are a
