The electron is a fundamental particle with no known substructure: it does not have parts, it is simply an electron.
Theres a small wooden sound post inside which needs specialist repair if it becomes dislodged but the strings, wooden bridge and tailpiece at the bottom can normallly be replaced from an instrument...
electrons are part of atoms.
i think it is the part in your imagination.
The legend, scale, and and contours.
fatty, and acids.