ðˈɛɹfoːɹ, mˌʌltɪpəl bæktˈɪɹiəl stɹˈeɪnz hɐvbɪn mˌɛɾəbˈɑːlɪkli ˌɛndʒɪnˈɪɹd ɪnðə lˈæbɹətˌɔːɹi tʊ ɪŋkɹˈiːs ðɪ ˌɪndᵻvˈɪdʒuːəl jˈiːldz ʌv sˈɜːʔn̩ ˈɛnd pɹˈɑːdʌkts.
Therefore, multiple bacterial strains have been metabolically engineered in the laboratory to increase the individual yields of certain end products.