It's a family of tiny building blocks of matter
.... Miami Museum of Science, Atom's Family, "The Phantom's Portrait 
Parlor,"... [DOC] [TLE] Origins: CERN: Ideas: The Building Blocks Of Matter | Exploratorium [PAR] What are the most fundamental building blocks of all matter -- the pieces of ... size 
of a person, and each quark and electron would be smaller than a tiny freckle.