TABLE 1.

Distribution of immature and mature virus particles

Virusb	Totala	% of particles that are:
		Crescents	IV	IMV	CEV	EEV
WR	1,100	3.1	5.7	66.5	19.7	5.0
vH3Δ	671	17.3	43.6	21.5	11.2	6.4
vH3i + I	732	6.4	8.6	61.0	20.3	3.7
vH3i − I	743	23.9	45.7	22.8	5.2	2.4

^aTotal number of crescents, IV, IMV, CEV, and EEV counted. 

^bvH3i + I, vH3i in the presence of IPTG; vH3i − I, vH3i in the absence of IPTG.