| G1 | presynthetic gap [phase of cells prior to DNA synthesis] |
|---|---|
| G2 | postsynthetic gap [phase of cells following DNA synthesis] |
| GMK | green monkey kidney [cells] |
| HD | Haab-Dimmer [syndrome]; Hajna-Damon [broth]; Hansen disease; hearing distance; heart disease; helix ... |
| HDRBC | head-damaged red blood cells |