Aldolase activity per unit of antigen

serial passage has no effect on aldolase activity per unit of antigen in mouse cells.

“the amount of enzyme per unit of antigen remained constant throughout the in vitro lifespan of these cells.”

Cellsthroughout the in vitro lifespan of BALB/c embryo fibroblastsembryo fibroblast

The lack of altered enzyme molecules in "senescent" mouse embryo fibroblasts in culture

Mechanisms of ageing and development·1 Jan 1975