1.   NIP-derivatised human cells were tested as a model for targeted gene delivery, but became permissive for both modified and unmodified ecotropic viral particles.

2.   But this new evidence suggests that inaccessible sanctuary sites in the body, such as the brain, may harbor viral particles.

3.   But when stimulated, these few viral particles were capable of producing the virus.

4.   First, NAT employs genetic techniques to find any viral particles in the sample and to replicate them millions of times over.

5.   Roche uses a replication technique called polymerase chain reaction to grow the tiny viral particles.

6.   So after it incorporates the gene into one cell, the viral particle cannot go on to direct the cell to produce more viruses.

7.   The viral particles, in turn, adhere to the antibodies.

8.   These drugs interfere with an enzyme to block the production of new viral particles.

9.   When fish become infected with the salmon anemia, they shed viral particles that are then spread to other fish in their proximity, or borne on ocean currents.

10.   Without ribosomes, the messenger cannot make new viral particles.