Erythrocytes (Red Blood Cells)
Q: What is the term for the immature red blood cells that still contain remnants of ribosomal RNA and are identified on a special supravital stain?
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Testicular germ cell tumors originate from the germinal epithelium that lines the seminiferous tubules within the testis. These tubules are the sperm-producing factories of the testicle. Germ cells are the precursors to spermatozoa. It is believed that a malignant transformation occurs in a primordial germ cell, leading to the development of a tumor. Over 95% of testicular cancers are germ cell tumors. They are subclassified into seminomas (which resemble primitive germ cells) and non-seminomatous germ cell tumors (NSGCTs like embryonal carcinoma, yolk sac tumor, choriocarcinoma, and teratoma), which show differentiation towards embryonic or extra-embryonic tissues. The remaining minority of testicular tumors are sex cord-stromal tumors (like Leydig cell tumors), which arise from the supporting tissues within the testis.
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