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Table 5 Properties of recombinant NDV strains: M protein and virulence.

From: Virulence of newcastle disease virus: what is known so far?

Virus

Parent

ICPI

Reference

FL-Herts

Herts/33

1.54

[13]

FL-Herts(M) AV

Herts/33

1.18

[13]

rgAV324

AV324/96

0.10

[13]

rgAV324(M) H

AV324/96

0.00

[13]

  1. Superscript AV: M gene originating from strain AV324/96.
  2. Superscript H: M gene originating from strain Herts/33.