Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effect of cell passage number on the population doubling of MC3T3‐E1 cells. Passage 25 cells were initially seeded into T‐25 flasks. Every 4 days the cells in each flask were counted, subcultured (1.25 × 103/cm2) and the number of population doubling calculated. The data represent the mean of four to six samples ± the standard error of the mean. *Significance (P < 0.05).
