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What is the formula of virtual effective diameter in case of unified threads? . b) Simple effective diameter – . c) Simple effective diameter + . d) Simple effective diameter – .
Which of the following is the most accurate method for microbial assay of antibiotics?
Most of the microorganism which produce antibiotics live in the soil because
Which of the following may be a reason for the development of resistance to antibiotics?
For which of the following purpose, antibiotics are not used?