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Description
found that KPV does not penetrate intact skin well by passive diffusion alone

Measurement of total vitamin B12 and holotranscobalamin, singly and in combination, in screening for metabolic vitamin B12 deficiency
This minimizes the contact area between the solution and the stopper, reducing the potential for leachables and extractables from the rubber to enter the solution over time

FOXO4 expression was detected in the interstitial or peritubular cells, but not within the seminiferous tubules (Figure 1A)
