title: Tracing the footsteps. A look at theories on the origin of HIV.
authors.forename: C
authors.initials: C
authors.lastname: Fritzen
mesh_terms: D000818:Animals; D005075:Biological Evolution; D006678:HIV / Q000235:genetics*; D006801:Humans; D023321:Poliovirus Vaccines / Q000009:adverse effects; D011323:Primates; D015302:Simian Immunodeficiency Virus / Q000235:genetics
chemical_list: D023321:Poliovirus Vaccines