PEIR Digital Library

Welcome to the Pathology Education Informational Resource (PEIR) Digital Library, a multidisciplinary public access image database for use in medical education.

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HISTOLOGY: TESTES: TESTES. INTERSTITIAL CELL, labeled.; TESTES. BROWN CELLS AT YELLOW ARROW=INTERSTITIAL CELLS(LEYDIG CELLS, A=SPERMATOGONIUM, B=SERTOLI CELL NUCLEUS, CYAN ARROWS = PRIMARY SPERMATOCYTES