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Ferrein's pyramid; medullary ray (In anatomy, a medullary ray (Ferrein's pyramid) is the middle part of a cortical lobule (or renal lobule).  wikipedia.org KatyaAkm) | |||
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| Ferrein's pyramid; medullary ray (In anatomy, a medullary ray (Ferrein's pyramid) is the middle part of a cortical lobule (or renal lobule). wikipedia.org KatyaAkm) | |||