Bacterial Conjugation, TEM

Bacterial Conjugation, TEM

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Credit: ANDERSON / OMIKRON/SCIENCE PHOTO LIBRARY

Caption: A transmission electron micrograph (TEM) showing bacterial recombination. The slender tube between the two bacteria of different strains in this electron micrograph is known as a pilus (plural: pilli) (in blue). Its proteins are produced in a plasmid-plus bacterium by two genes on the plasmid chromosome. The pilus is a plasmid's way of moving its genes from bacterium to another. Once the pilus forms the plasmid undergoes a round of replication. The new plasmid chromosome passes through the pilus into the plasmid-minus bacterium. The arrival of a plasmid changes the recipient into a plasmid-plus bacterium, which is capable of repeating the process. Magnification = x40,000.

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Keywords: bacteria, bacterial, bacterium, cell, color, conjugating, conjugation, conjugative plasmid, conjugative plasmids, enhance, enhancement, gene, genetic, genetic recombination, histology, microbe, micrograph, micrography, microorganism, microscopy, pathogenic, pili, pilus, plasmid, plasmid exchange, prokaryote, recombination, single cell, single celled, tem, transmission electron micrograph

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