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Cytoarchitecture of the Fetal Murine Soleus Muscle by Marcia Ontell; Dianna Bourke; Donna Hughes is a Medicine article available to read on EtoBox.

What is Cytoarchitecture of the Fetal Murine Soleus Muscle about?

The organogenesis of the soleus muscle of the 129 ReJ mouse (a mixed muscle, which in the adult contains approximately equal numbers of slow-twitch oxidative and fast-twitch oxidative-glycolytic myofibers) was studied in spaced, serial transverse, and longitudinal sections of muscles of 14-, 16-, and 18-day in utero and 1- and 5-day postnatal mice. A discrete soleus muscle was distinguished by 14 days in utero. It consisted of groups of closely apposed primary myotubes displaying junctional complexes and a pleomorphic population of mononucleated cells. Between 14 and 16 days in utero there was little de novo myotube formation. At 16 days in utero, basal lamina surrounded groups of primary myotubes; and primitive motor endplates were found on these myotubes. At 18 days in utero, the basal-lamina-enclosed groups of primary myotubes were no longer present. At this stage, basal lamina surrounded clusters (consisting of one primary myotube and one or more secondary myotubes) or independent myotubes (single myotubes surrounded by their own basal lamina). Cluster formation and cluster dispersal occurred concurrently, beginning at 18 days in utero and extending until birth. At birth, there

Who reads Cytoarchitecture of the Fetal Murine Soleus Muscle?

Author

Marcia Ontell; Dianna Bourke; Donna Hughes

Publisher

Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0002-9106)

Published

1988

Language

EN

Field

Medicine (Health Sciences)