| BLEO | Beyond Low Earth Orbit |
| CDK | Cyclin-Dependent Kinase |
| DNA | Deoxyribonucleic Acid |
| EVA/IVA | Extravehicular Activity and Intra-Vehicular Activity |
| HLU | Hind Limb Unloading |
| GCR | Galactic Cosmic Radiation |
| GPx-1 | Glutathione Peroxidase |
| cGy | Centi Gray |
| Gy | Gray |
| H2O2 | Hydrogen Peroxide |
| LEO | Low Earth Orbit |
| LDR | Low Dose Radiation |
| Mn-SOD | Manganese Superoxide Dismutase |
| NO | Nitric Oxide |
| NOX2 | Nicotinamide Adenine Dinucleotide Phosphate-oxidase (isoform 2) |
| NOX4 | Nicotinamide Adenine Dinucleotide Phosphate-oxidase (isoform 4) |
| eNOS | Endothelial Nitric Oxide Synthase |
| OSaD | Oxidative Stress and Damage |
| OXPHOS | Oxidative Phosphorylation |
| RAW 264.7 | Murine Monocyte Cell Line Identification |
| REDOX | Reduction and Oxidation |
| RNA | Ribonucleic Acid |
| ROS/RNS | Reactive Oxygen and Reactive Nitrogen Species |
| SDG | Flaxseed Lignan Secoisolariciresinol Diglucoside |
| SOD | Super Oxide Dismutase |
| TCA | Tricarboxcylic Acid |
| Wnt | Wingless-Type MMTV (mouse mammary tumor virus) |
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