Qualifier	sub_strain
Definition	name or identifier of a genetically or otherwise modified strain from which sequence was obtained, derived from a parental strain (which should be annotated in the strain qualifier). sub_strain from which sequence was obtained
Value Format	"free text"
Example	<INSDQualifier_value>abis</INSDQualifier_value>
Comment	If the parental strain is not given, this should be annotated in the strain qualifier instead of sub_strain. For example, either a strain qualifier with the value K-12 and a substrain qualifier with the value MG1655 or a strain qualifier with the value MG1655