Cell Feeding Experiment: Total amounts of MUGS Units (nmoles/hr) and protein (mg) in each sample extracted for HPTLC analysis.

1Untransfected. 2High expressing clone (single clone used for each of these determinations). 3Moderately high expressing clone. 4∼25% of the MUGS units in these samples were found to be associated with alpha-H1 or alpha-H2 heterodimers (Fig. 4). 5Not Applicable.