TABLE 2.

Cellular localization of mouse H19 in proliferative and differentiated C2C12 myoblastic cells^a

Gene	C2C12 cells (relative % total expression)
	Proliferating		Differentiated
	Nuclear cell extract	Cytoplasmic cell extract	Nuclear cell extract	Cytoplasmic cell extract
U3 snoRNA	68	32	94.2	5.8
H19	23.6	76.4	16.6	83.4
91H (mE primers)	100	<0.05	99.5	<0.5
91H (mG primers)	100	<0.05	100	<0.05

^aRNA levels were determined as described for Table 1. The results are expressed in relative percentages of total expression. Values in boldface indicate the preferential localization of the transcript.