TABLE 2.

APN activity and enrichment in microscale preparations of BBMV from whole neonate and third-instar larvae

Larvae	M. sexta		P. brassicae		M. brassicae		S. exigua
	APN sp act (μmol min−1 mg−1)a	Enrichment factorb	APN sp act (μmol min−1 mg−1)	Enrichment factor	APN sp act (μmol min−1 mg−1)	Enrichment factor	APN sp act (μmol min−1 mg−1)	Enrichment factor
Neonatec	0.59 ± 0.1	2.5 ± 0.5	0.2 ± 0.11	1.33 ± 0.33	0.4 ± 0.11	5.82 ± 1.28	2.2 ± 0.2	15.71 ± 1.43
Third instard	1.7 ± 0.9	3.25 ± 1.75	0.66 ± 0.13	3.73 ± 0.48	0.86 ± 0.24	8.0 ± 2.0	1.3 ± 0.3	6.77 ± 1.22

^aAPN specific activity in purified BBMV preparation. The values are means ± standard errors of the means (n = 3).

^bEnrichment of APN specific activity from the crude insect homogenate to the final purified BBMV preparation. The values are means ± standard errors of the means (n = 3).

^cBBMV prepared from whole neonate larvae. The starting biomass of insect material was 0.5 g for all species except M. sexta, for which the starting biomass was 2 g.

^dBBMV prepared from whole third-instar larvae. The starting biomass of insect material was the same as that described in footnote c.