H4
H4 stands for:
- Histone H4, one of the five main histone proteins of chromatin in eukaryotic cells
- H4 ( Slovenia), a freeway in Slovenia
- H4 halogen bulb for car headlights, see car headlights # light sources
- A groundbreaking clock by John Harrison ( watchmaker ) ( 1693-1776 )
See also:
- Hartz IV
- Disambiguation
- Abbreviation