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in tissue culture, cells derived from a primary culture or a single cell (clone) and possessing a specific feature such as a marker chromosome, antigen, or resistance to a virus.
1. to overexercise.
2. to filter.
3. an overstretching or overexertion of some part of the musculature.
4. excessive effort.
5. one or more organisms within a species or variety, characterized by some particular quality, as rough or smooth strains of bacteria.
strain 2 Brucella suis
used in a vaccine in China against brucellosis in all target species.
strain 19 Brucella abortus
see strain 19.
strain 45/20 Brucella abortus
the strain of reduced virulence used as a living vaccine for adult cattle against bovine brucellosis.
strain 51 Salmonella dublin
a rough strain with reduced virulence used in Europe to immunize young calves.
strain RB51 Brucella abortus
a live rough mutant that will immunize cattle but does not induce a reaction to standard serological tests for brucellosis.
strain Rev I Brucella melitensis
live attenuated strain used for vaccination in small ruminants.
strain SC54 Salmonella cholerasuis
an avirulent organism used live in a vaccine against salmonellosis in swine.
strain 9R Salmonella gallinarium
a rough strain used as a live vaccine against S. gallinarium and S. enteriditis in poultry.
see cell culture.
physical stress which tends to structural compaction.
physical strain which tends toward structural elongation.