Synchrotron radiation micro-computer tomography (SRlCT) offers the possibility to investigate biomineralized structures in high
detail. Two animals of adult medaka fish (Oryzias latipes) were analyzed by SRlCT with a resolution of 6.55 lm: the wild-type animal
was normally developed whereas the second animal showed an idiopathic deformation of the cranial and axial skeleton. These deformations
could be followed on the macro- and on the microscale (i.e., on the level of the individual ribs and fin bones). Our study clearly
demonstrates that SRlCT is an excellent technique to study alterations in the skeletal structure of fish in detail.
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