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The survival of the HAD-MSCs for a period of 90 days in VH and even longer period of up to 6 months in other eye tissues makes them a promising source to be considered in regenerative medicine of eye diseases. However, the potency of crossing the BRB by the implanted cells suggests that use of HAD-MSCs must be handled with extreme caution.

Potentials of hBG introns as enhancer-like elements for the expression of the hFIX in cultured CHO cells and a higher activity with respect to the second hBG intron compared to the first one were demonstrated. The larger number of TFBs in the second hBG intron reflects its stronger effect. The results obtained suggest possible synergistic functions of the hBG introns and Kozak on the expression level of hFIX in vitro.