attributes.tag: source_name
attributes.value: Primary Root (6 DAS); Primary Root (V1)
attributes.tag: cultivar
attributes.value: B73
attributes.tag: tissue
attributes.value: Primary Root (6 DAS); Primary Root (V1)
attributes.tag: Stage
attributes.value: Primary Root (6 DAS); Primary Root (V1)
attributes.tag: age
attributes.value: Primary Root (6 DAS); Primary Root (V1)
attributes.tag: fraction
attributes.value: cDNA