Aberrant (circular) myofibrils in amphibian larvae: An example of orthogonal tissue structure
✍ Scribed by Weiss, Paul ;James, Ruth
- Book ID
- 102889121
- Publisher
- John Wiley and Sons
- Year
- 1955
- Tongue
- English
- Weight
- 981 KB
- Volume
- 129
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
✦ Synopsis
On the occasion of studying cross sections of urodele larvae that had been used in experiments of one of his students, the senior author (P.W.) noted a striking aberration in the architecture of some trunk muscle fibers: Instead of being composed entirely of parallel longitudinal myofibrils, as usual, these aberrant fibers contained longitudinal fibrils in their cores only, while the more peripheral portions consisted of circular fibrils wrapped around the former like insulation around a pipe. I n following up this observation, the phenomenon was found to be not uncommon in larvae that had suffered various kinds of experimental interferences, but very rare in normal animals. Although attempts to reproduce it systematically have been unsuccessful, the casual observations thus far made have a significant bearing 011 the histogenesis of muscle in general, hence, deserve to be put on record here.
DESCRIPTION
The muscle fibers in question will be referred to in the following simply as "aberrant fibers,'' abbreviated "a.f."