| G1 | presynthetic gap [phase of cells prior to DNA synthesis] |
|---|---|
| G2 | postsynthetic gap [phase of cells following DNA synthesis] |
| GAP | D-glyceraldehyde-3-phosphate; growth associated protein; guanosine triphosphatase-activating protein... |
| GJ | gap junction; gastric juice; gastrojejunostomy |
| VPG | velopharyngeal gap |