1 In the search box, type Defender and then, in the list of results, click Windows Defender. 2  Click Tools, and then click Options. 3  Click Real-time protection, and then select the Use real-time protection (recommended) check box.  Select the options you want, and then click Save.
plasmid / plasmids. A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance.
In their simplest form, plasmids require a bacterial origin of replication, an antibiotic resistance gene, and at least one unique restriction enzyme recognition site. These elements allow for the propagation of the plasmid within bacteria, while allowing for selection against any bacteria not carrying the plasmid. Self-replicating-Once you have constructed a plasmid, you can make an endless number of copies of the plasmid by growing the plasmid in bacteria. 2  Stable-Plasmids are stable long-term either as purified DNA or within bacteria (as glycerol stocks).