Barely Significant

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There is no previous data on HIV-1G tropism, thus it was interesting to note that all the five methods showed a trend toward higher usage of CXCR4 in HIV-1G in comparison to CRF02_AG and individually, was found to be statistically significant (p = 0.007, Fisher's exact test) using the combined criterion ( Figure 3b ), which has previously been shown to perform best for the prediction of CRF02_AG coreceptor usage [41] .
The potential side effects of excessive neurotrophin treatment, as may occur with pump-based systems, is currently unknown, but may be significant since, in addition to neuronal survival and differentiation effects, neurotrophins can also elicit changes in ion channel properties and neurotransmitter release, and are important in modulating activity-dependent neuronal plasticity that is essential for the functional and structural refinement of neuronal circuits [60] , [61] .