Labeled and unlabeled vitamin K concentrations were measured in selected tissues (liver, kidney, lung, heart and brain) following 1 week of daily injection with α-T, vehicle, or saline (labeled above each chart; see Table 2 for concentrations and statistical comparisons). Shown are the mean percentages of d4-PK, PK, d4-MK-4, and MK-4 in the charts for each injection condition; the total vitamin K concentration is shown below the chart and the percentages of the vitamin K forms are shown in the legend. Note that unlabeled MK-4 was only detected in brain.