Table 1.

Biological assessments of the NDV recombinant virus.

Virus	MDTa	ICPIb	HAc	EID50 d	TCID50 e
LaSota	110hs	0.15	1024	6.8 × 108	3.5 × 107
rLS/AMPV-C G	>150hs	0	512	3.2 × 108	1.8 × 107
rLS/AMPV-C F&G	>150hs	0	512	1.5 × 108	1.8 × 107

^aMDT: Mean death time assay in embryonated chicken eggs.

^bICPI: Intracerebral pathogenicity index assay in day-old chickens.

^cHA: Hemagglutination assay.

^dEID₅₀: 50% egg infective dose assay in embryonated chicken eggs.

^eTCID₅₀: 50% tissue infectious dose assay in DF-1 cells.