| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Arsenic isotope | Is a | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Inorganic arsenic | Is a | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Trivalent arsenic compound causing toxic effect | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Pentavalent arsenic compound causing toxic effect | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic-induced nail damage | Causative agent | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic measurement, gastric | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement, hair | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement, blood | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Anemia caused by arsenic hydride | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Toxic effect of arsenic AND/OR its compounds | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement, nails | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Organic arsenic poisoning | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement, urine | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Urine arsenic/creatinine ratio measurement | Has measured component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic measurement, gastric | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic measurement, hair | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic measurement | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic measurement, blood | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic measurement, nails | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic measurement, urine | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Urine arsenic/creatinine ratio measurement | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Plasma arsenic level | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| 24 hour urine arsenic output | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenical keratosis of the palms AND/OR soles | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Acetarsone 1gm suppository | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic trioxide 1mg/mL injection 10mL ampule | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Product containing acetarsol | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Product containing arsenic trioxide | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Product containing arsenic | Has active ingredient | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Exposure to arsenic | Causative agent | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Skin disease caused by arsenic | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenical keratosis | Causative agent | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of skin caused by arsenic | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic-induced skin pigmentation | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic-induced rain-drop hypomelanosis | Causative agent | False | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic | Has active ingredient | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Disorder of brain caused by arsenic | Causative agent | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic/creatinine ratio measurement | Component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic output measurement | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 2 | 
| Arsenic/creatinine ratio measurement | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 3 | 
| Arsenic output measurement | Component | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Substance concentration of arsenic in blood (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration ratio of arsenic to creatinine in urine (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration of arsenic in urine (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration ratio of total to reducable arsenic in urine (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration of arsenic in plasma (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration of arsenic in 24 hour urine (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Substance concentration of arsenic in serum (observable entity) | Component | True | Arsenic | Inferred relationship | Existential restriction modifier | 1 | 
| Arsenic 10mg/10ml solution for infusion vials | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic 12mg/6ml solution for infusion vials | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Arsenic 10mg/10ml solution for injection ampoules | Has active ingredient | False | Arsenic | Inferred relationship | Existential restriction modifier |  | 
| Trisenox 10mg/10ml solution for injection (Cell Therapeutics (UK) Ltd) | Has active ingredient | True | Arsenic | Inferred relationship | Existential restriction modifier |  |