| Allowed Value | Details | 
|---|---|
| man |                                  entity isolated from a genetically manipulated source  | 
| nat | entity isolated from a natural source | 
| syn | entity obtained synthetically | 
| Allowed Value | Details | 
|---|---|
| man |                                  entity isolated from a genetically manipulated source  | 
| nat | entity isolated from a natural source | 
| syn | entity obtained synthetically |