Electrochemotherapy with bleomycin was used to treat a patient for the first time in 1991 at the Institute Gustave Roussy in France, while electrochemotherapy with cisplatin was used to treat for the first time in 1995 at the Institute of Oncology, Ljubljana, Slovenia.
Če velja aksiom izbire, je naslednje večje kardinalno število Alef ena (oznaka formula_2).