Sentence examples for seed strains from inspiring English sources

Regulators have approved no new seed strains for nearly two years.

Regulators have not approved any new seed strains for nearly two years.

identified the virus quickly and got seed strains to vaccine makers.

That problem was compounded when the early seed strains of virus used to produce the vaccine grew more slowly than anticipated.

Unlike native seed strains, developed over long periods of time and therefore adapted to the conditions of a given area, the seed strains promoted by large corporations required the application of large amounts of fertilizer and pesticides.

The number of doses available will depend on how fast seed strains grow, how much protection a small dose provides, and whether immune-system boosters called adjuvants are needed and prove to be safe; adjuvants are not used in American flu vaccines now.

But the Pentagon refused to share the seed strain for its program with the civilian program.

All use a technology involving growing the vaccine in fertilized chicken eggs; at most of them, the seed strain grew more slowly than expected.

All use a technology that involves growing the vaccine in a fertilized egg; at most of the companies, the seed strain has grown more slowly than expected.

Rapid progress is being made on a new seed strain for that shot, and it may be shipped to vaccine makers by the end of May, he said.

C.D.C. scientists are working on a "seed strain" for a vaccine matched to the new swine flu, but warned that it would take months before enough doses for all Americans are ready.