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<p dir="ltr" style= "line-height: 1.38; margin-right: 5pt; margin-top: 0pt; margin-bottom: 0pt;"> <span style= "font-size: 12pt; font-family: Arial, sans-serif; color: rgb(0, 0, 0); background-color: transparent; font-weight: 400; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-alternates: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-variant-emoji: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> TWiM explains a study that examines pathogen presence in ancient humans and concludes that zoonoses emerged 6500 years ago with the domestication of livestock, and determination of universal rules that govern plasmid copy number.<br /> <br /></span></p> <p dir="ltr" style= "line-height: 1.38; margin: 0pt 5pt 0pt 1pt; text-indent: -4pt; padding: 0pt 0pt 0pt 4pt;"> <span style= "font-size: 12pt; font-family: Arial, sans-serif; color: rgb(0, 0, 0); background-...