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Related Clues:
- DNA units
- Fermi's particles
- Mother-daughter hand-me-downs?
- Matter components
- They may be smashed or split
- Diminutive energy sources
- Elemental building blocks
- Smallest particles
- Components of some pools
- Stuff that's passed on
- Elementary units
- They're passed down from parents
- Electron-swathed nuclei
- Minuscule bits
- Offspring's inheritance