| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Breast, pectoral muscles and axillary tissue (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Breast and axillary tissue (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vertebral column and cranium (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Bone and joint (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Bone and cartilage (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Sphenoid and ethmoid bones (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Zygomatic and palatine bones (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Rib and transverse process of vertebra (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Bones of vertebral column, pelvis and lower extremities (combined site) | Is a | False | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Radius and ulna (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, proximal (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, midshaft (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, distal (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Joints of head and vertebral column (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Nose and nasopharynx (combined site) (body structure) | Is a | False | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Epiglottis and larynx (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Terminal bronchiole and lung (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Lung and pleura (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Lung and tracheobronchial lymph nodes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Aortic and mitral valves (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Pericardial fluid and cavity (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Coronary artery and myocardium (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Coronary artery and coronary artery (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Coronary artery and internal mammary artery (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Coronary artery and cardiac vein (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery and pulmonary artery (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery and pulmonary vein (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Gastrointestinal fluids and spaces (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Lip and jaw (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Lower lip and lower jaw (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Upper lip and upper jaw (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Upper lip, upper jaw and palate (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Jejunum and ileum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Anus, rectum and sigmoid colon (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Digestive organs and peritoneum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Liver and intrahepatic bile ducts (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Gallbladder and bile ducts (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Gallbladder and extrahepatic bile ducts (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Gallbladder and common bile duct (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Pancreatic duct and bile duct systems (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Urinary tract fluids and spaces (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Kidney and renal pelvis (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Ureter and calyx (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Female genital fluids and spaces (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vulva and vagina (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vulva, vagina and perineum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vagina and uterus (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vagina and cervix (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vagina and perineum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus and cervix (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus, fallopian tubes and ovaries (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus, right fallopian tube and ovary (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus, left fallopian tube and ovary (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus and fallopian tubes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus and right fallopian tube (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Uterus and left fallopian tube (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Fallopian tube and ovary (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right fallopian tube and right ovary (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left fallopian tube and left ovary (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Both fallopian tubes and both ovaries (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Fallopian tubes, ovaries and broad ligaments (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right fallopian tube, right ovary and broad ligament (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left fallopian tube, left ovary and broad ligament (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Male genital fluids and spaces (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Glans penis and foreskin (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Prostate and seminal vesicle (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Lobes and capsule of prostate (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Testis and epididymis (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Testis and scrotum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Epididymis and vas deferens (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vas deferens and vas deferens (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Brain and spinal cord (combined site) (body structure) | Is a | False | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Brain, spinal cord and meninges (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Brain and meninges (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Brain and cranium (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Cerebral ventricle and subarachnoid cistern (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Cerebral ventricle and jugular vein (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Cerebral ventricle and peritoneum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Frontal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right frontal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left frontal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Temporal and frontal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right temporal and frontal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left temporal and frontal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Parietal and occipital lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right parietal and occipital lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left parietal and occipital lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Occipital and temporal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right occipital and temporal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left occipital and temporal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Temporal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Right temporal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Left temporal and parietal lobes (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Thalamus, pulvinar and geniculate bodies (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Pons and cerebellum (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Spinal cord and nerve roots (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Spinal cord and medulla (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Spinal cord and meninges (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Spinal cord and optic nerve (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  | 
| Vitreous and retina (combined site) | Is a | True | Combined site | Inferred relationship | Existential restriction modifier |  |