He owned fetuses
Kurt was always fascinated with anatomy. Medical references — especially about fetuses and vaginas — were often present in his lyrics and art, and he shared in one interview that he found a medical supplies store in the Mall Of America that sold all kinds of charts and books on the topic. But that wasn’t all. As Kurt described of the medical supplies store: “it’s really great, I bought all these fetuses.” He was probably referring to model fetuses like the ones he used in the collage on the back cover of In Utero. Hopefully.
The picture above shows Courtney and Frances in 1993 in front of a collage of flowers and model fetuses that Kurt put together on the living room floor. This was later used for the back cover of the album.