english: Here you had a chemical, either from the natural world or artificially synthesized in the laboratory, and it would course through your body, it would find its target, lock into its target -- a microbe or some part of a microbe -- and then turn off a lock and a key with exquisite deftness, exquisite specificity.
non_english: Imali ste hemikaliju, bilo iz sveta prirode ili veštački sintetizovanu u laboratoriji, ona bi prolazila kroz vaše telo, našla bi svoju metu, naciljala bi svoju metu - mikrob ili deo mikroba - a zatim onesposobila i bravu i ključ sa izuzetnom spretnošću, izuzetnom specifičnošću.