The frequent use of antibiotics in animal husbandry can proliferate microorganisms carrying antibiotic resistance genes. In some cases, antibiotic resistance genes can become highly mobile, meaning that they can migrate to those that are pathogenic to the human body. Bacteria. In this way, when humans get sick and then take antibiotics, because the bacteria are already resistant, the original magic drugs will lose their effectiveness. The text is intended to explain:. ['The human body will develop resistance to antibiotics.', 'Antibiotic resistance genes are mobile.', 'Animal husbandry should control the use of antibiotics.', 'Overuse of antibiotics can cause illness.']