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.
Equal numbers of MCs grown on chamber slides were growth arrested followed by incubation in media containing either vehicle (control), zinc protoporphyrin (100 μM) or Hb (50 μM) for six hours. Subsequently, cells were labeled for p21. Percentage of p21 +ve was recorded in 8 random fields. Results (means ± SEM) are from 3 sets of experiments. *P<0.001 compared with all variables.
