Although the results provide clear evidence for intervention effects, it appeared as if maturational factors also played a role. The findings are discussed in terms of their implications for treatment and for characterizing development in SLI.

Whole-brain imaging with light-sheet fluorescence microscopy and optically cleared tissue is a new, rapidly developing research field. Whereas successful attempts to clear and image mouse brain have been reported, a similar result for rats has proven difficult to achieve. Herein, we report on creating novel transgenic rat harboring fluorescent reporter GFP under control of neuronal gene promoter. We then present data on clearing the rat brain, showing that FluoClearBABB was found superior over passive CLARITY and CUBIC methods. Finally, we demonstrate efficient imaging of the rat brain using light-sheet fluorescence microscopy.

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The available evidence suggests that patients with normocalcemic PHPT develop complications of PHPT, despite having normal calcium levels. Most data come from referral populations and information regarding a mild, asymptomatic form of the disease is lacking. Future research requires a standardized approach to the diagnostic criteria of normocalcemic PHPT.