What's the noun for mitoses? Here's the word you're looking for.
mitosis
(cytology) The division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.
“Pokeweed mitogen is one of the few lectins that stimulates B lymphocytes as well as T lymphocytes.”
“The present results suggest that SUL-III may be a useful tool as a novel mitogen.”
“Platelet-derived growth factor is a major polypeptide growth factor found in human serum, platelets and fibroblasts and is a potent mitogen for cells of mesenchymal origin.”