TABLE 1.

Average maximal expression of hFIX from human myotubes

MOI	Infection of myotubes (after differentiation)a:			Infection of cells prior to differentiationa:
	2.5% FBSb	F10-based mediumb	SKGM-based mediumb	2.5% FBS	F10-based medium	SKGM-based medium
1 × 104	200	600	NDc	300	600	ND
1 × 105	200	800	1900	310	1,000	1,500
5 × 105	ND	1,700	ND	ND	1,300	ND

^aTotal expression of hFIX in nanograms per 10⁶ cells per day. 

^bThe cells were maintained in either of the three culture media as described in the text and Fig. 2. 

^cND, not done.