This barrel of mineral oil was used by Dr. Michael Potter to induce plasma cell tumors in mice.
Read Potter and Boyce’s paper “Development of Plasma-Cell Neoplasms in BALB/c Mice After Intraperitoneal Injection of Paraffin-Oil Adjuvant, Heat-Killed Staphylococcus Mixtures,” Journal of the National Cancer Institute, 25(4), October 1960, pp. 847-861.