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All the samples included in the microarray dataset were subjected to a principal component analysis to determine their spatial relationship to each other. Abbreviations: ESC, cultured embryonic stem cells; Oo, microdissected oogonia; Gon, microdissected gonocytes; CIS, microdissected carcinoma in situ; CIST, testis tissue containing CIS; NT, normal testis and Sert, microdissected Sertoli cells next to CIS.
