What cells contain a plasmid?

Plasmids are typically found in prokaryotic cells, such as bacteria, where they exist as small, circular, double-stranded DNA molecules separate from the chromosomal DNA. Some eukaryotic cells, particularly yeast and certain plant cells, can also contain plasmids, especially in laboratory settings where plasmids are used for genetic engineering. Plasmids often carry genes that can provide advantageous traits, such as antibiotic resistance.