00436    a2200157   4500020001500000082001500015100002200030245005400052250001200106260004800118300002000166440003800186650002500224650001200249650001700261  a0199636443  a572.8bESS  aBrown, T.A. eed.  aEssential molecular biology ba partical approach  a2nd ed.  aOxfordbOxford university Pressc2001g2001  axix,289p.c24cm  aA practical apporach series ; 255  aBiochemical genetics  aBiology  aBiochemistry