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| Description: Bacteria of two different strains were suspended in the liquid in the tube and separated by a filter. The liquid was forced through the filter by alternating suction and pressure. The pores in the filter were too small for the passage of bacteria, but they allowed the passage of DNA.
Picture Stats: Views: 6362 Filesize: 36.96kB Height: 580 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=559 Keywords: A U-tube apparatus like the one used by Bernard Davis. |