TABLE 1.

Analysis of partially purified virus^a

Virusb	p24 Ag (ng/ml)c	RT activity (nU/μl)d	p24 Ag/RTe	Virus replicationf (%)
TAR1	115	3.0	38.3	Negative
TAR2	92	2.1	43.8	Negative
TAR3	103	2.4	42.9	Negative
TAR4	257	7.8	32.9	3
TAR5	1,212	26.9	45.0	5
TAR6	261	8.2	31.7	100
Wild type	714	15.8	45.2	100

^aThe results are representative of those from three independent experiments. 

^bThe TAR RNA sequence is shown in Fig. 1. 

^cConcentration of p24 Ag measured in virus pelleted through a 20% sucrose cushion. 

^dRT activity of virus pelleted through a 20% sucrose cushion. 

^eAbsolute value of p24 Ag concentration divided by RT activity. 

^fPeak p24 Ag concentration in culture supernatant relative to the wild-type level.