TABLE 1.

Relative abundance of host cell RNAs in MLV virions

Host cell RNA species	Approx fold underrepresentation relative to 7SL RNA
7SL	1a
tRNAPro	3
tRNAMet	>180
tRNAVal	>250
5S RNA	3
5.8S RNA	90
18S RNA	140
Y1 RNA	1
Y3 RNA	1
B1 RNA	2
U1 snRNA	700
U2 snRNA	50
U4 snRNA	180
U5 snRNA	170
U6 snRNA	5
7SK RNA	20

^aValues for 7SL RNA were set to 1. Values for the other RNAs were determined using Northern blots of cell and viral samples coprobed for each RNA plus 7SL, as described in the text.