midichlorians
Midichlorians are microscopic, sentient entities that inhabit the cells of all living beings in the Star Wars universe. They are believed to be the source of the Force, acting as conduits through which Force-sensitive individuals can connect with and manipulate this cosmic energy field. The presence and number of midichlorians within a living being are thought to determine their potential Force sensitivity.
First introduced in the prequel trilogy, the concept of midichlorians was intended to provide a biological
The presence of midichlorians in a person's cells can be detected through specific tests, which were used