Cholera Studies
During the cholera outbreak in 1849, physicians preserved specimens of intestines from cholera patients. Thanks to these specimens, the actual strain of the outbreak was identified in 2013.
A Mermaid
Obviously, this isn't a real mermaid. The fishtail is actually real and from a Pacific wrasse. The head and the thorax were sculpted separately, and it was all put together by the artist. The teeth are real fish teeth.