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2.4 Isolation of Phage Nucleic Acids
  1)The phage filtrate having 8% polyethylene glycol (PEG) and 4% NaCl was centrifuged at 26,000 rpm for 4 h.
  2) Dissolve the pellet in 100 ¦ÌL autoclaved distilled water and sonicate it for 3 min. Centrifuge it again for 5 min at 14,000 rpm.
  3)One microliter of DNaseI was added and incubated at 37¡ãC for 30 min. After incubation,4 ¦ÌL of 2.5 X SDS-EDTA dye (0.4% SDS, 30 mM EDTA,
0.25% bromophenol blue, 20% sucrose) was added to the tubes and kept at 80¡ãC in Heat Block for 10 min. After heat treatment, the whole lysate was loaded onto 0.7% TAE agarose gel (Tris base, boric acid, EDTA, pH 8.3) containing 0.5 ¦Ìg/mL of ethidium bromide.
  4)The gel was run at a voltage of 90 V and the bands were visualized using a UV transilluminater.
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3Â¥: Originally posted by louis_cheung at 2014-11-08 14:13:19
2.4ÊɾúÌåºËËáµÄ·ÖÀë
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