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.
Characterization of the adriamycin (ADR)-resistant A549 cell line. (a) The morphologies of A549 and A549/ADR cells were observed under a microscope; (b) Effects of ADR on A549 and A549/ADR cells for 48 h. Cell viability was determined by the MTT assay. The results of independent experiments were averaged and are presented as percentage cell viability. Values represent means ± standard deviation (SD) (n = 3) (* p < 0.05).
