The prophylactic value of pertussis vaccine has been reported by many investigatiors. However a potent vaccine could be prepared through the selection of strains. The comparative investigation for the properties of 8 laboratory stock strains, routinel...
The prophylactic value of pertussis vaccine has been reported by many investigatiors. However a potent vaccine could be prepared through the selection of strains. The comparative investigation for the properties of 8 laboratory stock strains, routinely use