organism: Homo sapiens
attributes.tag: isolate
attributes.value: undifferentiated_spermatogonias_1
attributes.tag: age
attributes.value: 25
attributes.tag: biomaterial_provider
attributes.value: Department of Urology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 1639 Dongfang Road,
attributes.tag: sex
attributes.value: male
attributes.tag: tissue
attributes.value: testis
attributes.tag: BioSampleModel
attributes.value: Human