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. 1979 Oct;129(Pt 3):459–477.

Morphological observations on the metanephros in the postnatal opossum, Didelphis virginiana.

W J Krause, J H Cutts, C R Leeson
PMCID: PMC1233014  PMID: 541236

Abstract

The metanephros of the newborn opossum is very immature, consisting only of collecting tubules and a few immature nephrons. Development during the postnatal period can be divided into two distinct phases. The initial phase occurs during the first 60 days of postnatal life and is concerned with nephronogenesis and the differentiation of nephrons that have formed during this period. The second phase lasts through the remainder of the postnatal period and is concerned with further differentiation and growth of established nephrons. During this latter period the tubular portion of the nephron increases in length and the renal corpuscle increases in diameter. Ultrastructural observations suggest that metanephric nephrons are not functional during the first 4 days of postnatal life, while the mesonephros reaches the height of its development during this period: there may be some functional overlap between the mesonephros and metanephros during the latter part of the first week of postnatal life. The pattern of nephron induction and differentiation in the opossum is discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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